subject:(Donor acceptor)

Mississippi State University

1. Nareddy, Radhika Reddy. Synthesis and reactions of novel donor-acceptor cyclopropanes.

Degree: PhD, Chemistry, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07272016-173346/ ;

► Natural products serve as a major resource for many pharmacologically-active drugs found in the market today. Using natural products as medicines, however, is associated… (more)

▼ Natural products serve as a major resource for many pharmacologically-active drugs found in the market today. Using natural products as medicines, however, is associated with many limitations such as availability and isolation. An alternative to this is the synthesis of these compounds, which can be done using two different approaches: (1) Total synthesis of the molecule, and (2) A semi-synthetic approach. Total synthesis generally involves synthesis of the target molecule by assembling the ring systems or the core skeletal framework of the natural product. There are numerous methods reported in the literature for the synthesis of these ring systems. Despite this, there is always a quest for new methods; methods with improved efficiency in terms of chemo-, regio- and stereoselectivities. As a result, new synthetic tools are needed to address these issues. These new tools can be the development of new catalysts, new techniques, or innovative methodologies, which will allow new transformations and aid in the synthesis of complex natural products. In recent years small, strained molecules such as cyclopropanes, cyclobutanes and cyclopropenes, have been successfully employed for the synthesis of complex ring systems. In this dissertation a new method to access certain carbocyclic and heterocyclic ring systems using cyclopropanes as building blocks will be presented. This involves synthesis of novel cyclopropanes by intermolecular reaction between substituted styrenes and different alpha-arylmethyl-alpha-diazo compounds in the presence of Rhodium catalysts. The challenge in the synthesis of these cyclopropanes is that these diazo compounds are notorious for undergoing beta-hydride elimination reactions, thus limiting their use for intermolecular reactions. In this study, we aim to synthesize the proposed cyclopropanes in good yields while minimizing, if not completely eliminating, the beta-hydride elimination reaction. The first half of the thesis discusses the different approaches taken to synthesize the desired cyclopropanes with limited success. However using Rh₂ (S-PTTL)₃ TPA as the catalyst and optimizing the reaction conditions allowed us to synthesize these cyclopropanes in moderate to good yields. The second part of the thesis focuses on the study of ring opening reactions of the cyclopropanes synthesized using various Lewis acids. Advisors/Committee Members: Keith T.Mead (chair), Joseph P. Emerson (committee member), Todd E.Mlsna (committee member), Colleen N. Scott (committee member), Debra Ann Mlsna (committee member).

Subjects/Keywords: donor-acceptor cyclopropanes

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APA (6^th Edition):

Nareddy, R. R. (2016). Synthesis and reactions of novel donor-acceptor cyclopropanes. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07272016-173346/ ;

Chicago Manual of Style (16^th Edition):

Nareddy, Radhika Reddy. “Synthesis and reactions of novel donor-acceptor cyclopropanes.” 2016. Doctoral Dissertation, Mississippi State University. Accessed March 06, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07272016-173346/ ;.

MLA Handbook (7^th Edition):

Nareddy, Radhika Reddy. “Synthesis and reactions of novel donor-acceptor cyclopropanes.” 2016. Web. 06 Mar 2021.

Vancouver:

Nareddy RR. Synthesis and reactions of novel donor-acceptor cyclopropanes. [Internet] [Doctoral dissertation]. Mississippi State University; 2016. [cited 2021 Mar 06]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07272016-173346/ ;.

Council of Science Editors:

Nareddy RR. Synthesis and reactions of novel donor-acceptor cyclopropanes. [Doctoral Dissertation]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07272016-173346/ ;

University of North Texas

2. Cantu, Robert. Synthesis and Characterization of Triphenylene-BODIPY Paddle Wheel Conjugates for Ultra-Fast Light Induced Charge Separation Yielding High-Energy Charge-Separated States.

Degree: 2019, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc1505171/

► In the development of covalent organic frameworks (COFs), often the scaffold linkers are assumed to be electro- and photoinactive, and this was also to be… (more)

Subjects/Keywords: BODIPY; donor-acceptor; Triphenylene

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APA (6^th Edition):

Cantu, R. (2019). Synthesis and Characterization of Triphenylene-BODIPY Paddle Wheel Conjugates for Ultra-Fast Light Induced Charge Separation Yielding High-Energy Charge-Separated States. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc1505171/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cantu, Robert. “Synthesis and Characterization of Triphenylene-BODIPY Paddle Wheel Conjugates for Ultra-Fast Light Induced Charge Separation Yielding High-Energy Charge-Separated States.” 2019. Thesis, University of North Texas. Accessed March 06, 2021. https://digital.library.unt.edu/ark:/67531/metadc1505171/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cantu, Robert. “Synthesis and Characterization of Triphenylene-BODIPY Paddle Wheel Conjugates for Ultra-Fast Light Induced Charge Separation Yielding High-Energy Charge-Separated States.” 2019. Web. 06 Mar 2021.

Vancouver:

Cantu R. Synthesis and Characterization of Triphenylene-BODIPY Paddle Wheel Conjugates for Ultra-Fast Light Induced Charge Separation Yielding High-Energy Charge-Separated States. [Internet] [Thesis]. University of North Texas; 2019. [cited 2021 Mar 06]. Available from: https://digital.library.unt.edu/ark:/67531/metadc1505171/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cantu R. Synthesis and Characterization of Triphenylene-BODIPY Paddle Wheel Conjugates for Ultra-Fast Light Induced Charge Separation Yielding High-Energy Charge-Separated States. [Thesis]. University of North Texas; 2019. Available from: https://digital.library.unt.edu/ark:/67531/metadc1505171/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Victoria University of Wellington

3. Altaf, Yasir. Computational Chemistry of Compounds with Donor-Acceptor Interactions.

Degree: 2019, Victoria University of Wellington

URL: http://hdl.handle.net/10063/8557

► Compounds with donor-acceptor interactions find important applications in catalysis, C-H activation, phosphorus activation, selective oxidation and cyclization. Moreover, they are potential candidates for use in… (more)

▼ Compounds with donor-acceptor interactions find important applications in catalysis, C-H activation, phosphorus activation, selective oxidation and cyclization. Moreover, they are potential candidates for use in the synthesis of materials, polymers and light-harvesting systems. The efficient use of a chemical entity is possible when we know its structural and bonding properties. This computational study is intended for the same by studying in detail the structure and bonding properties of donor-acceptor complexes of heavier main-group metals with cyclophane ligands and some heterobimetallic complexes. Additionally, we explored the fluorescence characteristics of benzanthrone dyes. The first part (i.e. main group metal complexes) involves the exploration of structural features and thermal properties through DFT optimization and then calculating the change in enthalpy of formation for all the possibilities under consideration. For this purpose we selected the last three elements from each of Groups 13, 14 and 15 to explore their different coordination modes with two cyclophane ligands; [2.2.2]paracyclophane and deltaphane. We opted for chlorides of each metal to allow them to coordinate from outside the phenyl rings of the cyclophane cavity and from the top of the cavity. To see the coordination of the metals with the inner core of the selected cyclophanes, we put metal cations in the centre of the cavity and optimized. Subsequently, the bonding properties of these inclusion complexes have been analysed in detail on the basis of Morokuma-Ziegler energy decomposition analysis. Secondly, we investigated the structure and bonding properties of some indium-zinc heterobimetallic compounds through geometry optimization, NBO analysis and quantum theory of atoms in molecules (QTAIM) analysis – also known as Bader's analysis. We propose that the heterobimetallic reactant involves donor-acceptor bond that cleaves as a result of the addition of mesityl azide. The newly formed complex has In-N and Zn-N bonds. In the final part benzanthrone dyes containing intramolecular donor-acceptor interactions, (and hence, undergoing intramolecular charge transfer) were subject to the computational investigation of the mechanism of fluorescence taking place in them. Electronic excitations and the structure of first excited state in each case has been discussed thoroughly based on the time-dependent density functional theory. To check for the non-radiative loss of energy, we also performed calculations for the vertical excitations of the triplet states of all the molecules under study. To get a deeper insight into the intramolecular charge transfer, we performed NTO analysis that gives us information based on different colours in regions of charge accumulation and charge depletion. Advisors/Committee Members: Lein, Matthias, Coles, Martyn.

Subjects/Keywords: Computational chemistry; Theoretical; Donor-acceptor

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APA (6^th Edition):

Altaf, Y. (2019). Computational Chemistry of Compounds with Donor-Acceptor Interactions. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/8557

Chicago Manual of Style (16^th Edition):

Altaf, Yasir. “Computational Chemistry of Compounds with Donor-Acceptor Interactions.” 2019. Doctoral Dissertation, Victoria University of Wellington. Accessed March 06, 2021. http://hdl.handle.net/10063/8557.

MLA Handbook (7^th Edition):

Altaf, Yasir. “Computational Chemistry of Compounds with Donor-Acceptor Interactions.” 2019. Web. 06 Mar 2021.

Vancouver:

Altaf Y. Computational Chemistry of Compounds with Donor-Acceptor Interactions. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2019. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/10063/8557.

Council of Science Editors:

Altaf Y. Computational Chemistry of Compounds with Donor-Acceptor Interactions. [Doctoral Dissertation]. Victoria University of Wellington; 2019. Available from: http://hdl.handle.net/10063/8557

University of North Texas

4. Das, Sushanta Kumar. Carbon Nanostructure Based Donor-acceptor Systems for Solar Energy Harvesting.

Degree: 2013, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc407823/

► Carbon nanostructure based functional hybrid molecules hold promise in solarenergy harvesting. Research presented in this dissertation systematically investigates building of various donor-acceptor nanohybrid systems utilizing… (more)

Subjects/Keywords: Nanostructure; solar energy; donor-acceptor

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APA (6^th Edition):

Das, S. K. (2013). Carbon Nanostructure Based Donor-acceptor Systems for Solar Energy Harvesting. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc407823/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Das, Sushanta Kumar. “Carbon Nanostructure Based Donor-acceptor Systems for Solar Energy Harvesting.” 2013. Thesis, University of North Texas. Accessed March 06, 2021. https://digital.library.unt.edu/ark:/67531/metadc407823/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Das, Sushanta Kumar. “Carbon Nanostructure Based Donor-acceptor Systems for Solar Energy Harvesting.” 2013. Web. 06 Mar 2021.

Vancouver:

Das SK. Carbon Nanostructure Based Donor-acceptor Systems for Solar Energy Harvesting. [Internet] [Thesis]. University of North Texas; 2013. [cited 2021 Mar 06]. Available from: https://digital.library.unt.edu/ark:/67531/metadc407823/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Das SK. Carbon Nanostructure Based Donor-acceptor Systems for Solar Energy Harvesting. [Thesis]. University of North Texas; 2013. Available from: https://digital.library.unt.edu/ark:/67531/metadc407823/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Texas

5. Thomas, Michael Brandon. Donor-Acceptor Systems: Photochemistry and Energy Harvesting Applications.

Degree: 2020, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc1703335/

► Donor-acceptor systems have unique properties that make them ideal candidates for solar energy harvesting through mimicry of natural photosynthesis. This dissertation is focused on unraveling… (more)

Subjects/Keywords: Photochemistry; artificial photosynthesis; donor-acceptor; Chemistry, Analytical

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APA (6^th Edition):

Thomas, M. B. (2020). Donor-Acceptor Systems: Photochemistry and Energy Harvesting Applications. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc1703335/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Thomas, Michael Brandon. “Donor-Acceptor Systems: Photochemistry and Energy Harvesting Applications.” 2020. Thesis, University of North Texas. Accessed March 06, 2021. https://digital.library.unt.edu/ark:/67531/metadc1703335/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Thomas, Michael Brandon. “Donor-Acceptor Systems: Photochemistry and Energy Harvesting Applications.” 2020. Web. 06 Mar 2021.

Vancouver:

Thomas MB. Donor-Acceptor Systems: Photochemistry and Energy Harvesting Applications. [Internet] [Thesis]. University of North Texas; 2020. [cited 2021 Mar 06]. Available from: https://digital.library.unt.edu/ark:/67531/metadc1703335/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Thomas MB. Donor-Acceptor Systems: Photochemistry and Energy Harvesting Applications. [Thesis]. University of North Texas; 2020. Available from: https://digital.library.unt.edu/ark:/67531/metadc1703335/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Houston

6. Yang, Xunmo 1988-. Ab Initio Calculations of Intramolecular Exciton Transfer with Reduced Modes in Donor-Bridge-Acceptor Species.

Degree: PhD, Chemistry, 2016, University of Houston

URL: http://hdl.handle.net/10657/3270

► We present a new, fully ab initio approach for computing intramolecular charge and energy transfer rates. Using a time-convolutionless master-equation approach, parameterized with couplings obtained… (more)

▼ We present a new, fully ab initio approach for computing intramolecular charge and energy transfer rates. Using a time-convolutionless master-equation approach, parameterized with couplings obtained from an accurate quantum-chemical approach, we benchmark the approach against experimental results and predictions from Marcus theory for triplet energy transfer for a series of donor-bridge-acceptor systems. An important component of our analysis is the use of a projection operator scheme that parses out specific internal nuclear motions that accompany the electronic transition. Using an iterative Lanczos method, we concentrate the coupling between the electronic and nuclear degrees of freedom into a small number of reduced harmonic modes. We find that using only a single reduced mode – termed the "primary mode" or "Lanczos modes", one obtains an accurate evaluation of the golden-rule rate constant and insight into the nuclear motions responsible for coupling the initial and final electronic states. In particular, the irreducible representation of the primary mode reveals hidden details of the dynamics. For the cases considered here, the primary modes belong to totally symmetric irreducible representations of the donor and acceptor moieties. Upon investigating the molecular geometry changes following the transition, we propose that the electronic transition process can be broken into two steps, in the agreement of Born-Oppenheimer approximation: a fast excitation transfer occurs, facilitated by the "primary Lanczos mode" (PLM), followed by slow nuclear relaxation on the final electronic diabatic surface. We apply the method to a larger, "star" molecule, that has been experimentally shown that its exciton transfer pathway can be radically modified by mode-specific infrared excitation of its vibrational mode. The primary mode and rate constants we obtain generally agree with the experiments. Advisors/Committee Members: Bittner, Eric R. (advisor), Lubchenko, Vassiliy (committee member), Xu, Shoujun (committee member), Coltart, Don M. (committee member), Stein, Gila E. (committee member).

Subjects/Keywords: Chemical dynamics; Donor-bridge-acceptor system

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APA (6^th Edition):

Yang, X. 1. (2016). Ab Initio Calculations of Intramolecular Exciton Transfer with Reduced Modes in Donor-Bridge-Acceptor Species. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/3270

Chicago Manual of Style (16^th Edition):

Yang, Xunmo 1988-. “Ab Initio Calculations of Intramolecular Exciton Transfer with Reduced Modes in Donor-Bridge-Acceptor Species.” 2016. Doctoral Dissertation, University of Houston. Accessed March 06, 2021. http://hdl.handle.net/10657/3270.

MLA Handbook (7^th Edition):

Yang, Xunmo 1988-. “Ab Initio Calculations of Intramolecular Exciton Transfer with Reduced Modes in Donor-Bridge-Acceptor Species.” 2016. Web. 06 Mar 2021.

Vancouver:

Yang X1. Ab Initio Calculations of Intramolecular Exciton Transfer with Reduced Modes in Donor-Bridge-Acceptor Species. [Internet] [Doctoral dissertation]. University of Houston; 2016. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/10657/3270.

Council of Science Editors:

Yang X1. Ab Initio Calculations of Intramolecular Exciton Transfer with Reduced Modes in Donor-Bridge-Acceptor Species. [Doctoral Dissertation]. University of Houston; 2016. Available from: http://hdl.handle.net/10657/3270

7. Bheemaraju, Amarnath. Effect of Side Chains on Organic Donor (D) and Acceptor (A) Complexes and Photophysical Properties of D-A Dyads.

Degree: PhD, Chemistry, 2011, U of Massachusetts : PhD

URL: https://scholarworks.umass.edu/open_access_dissertations/427

► This dissertation aims to understand the effect of incompatible side chains on the complexes of pi-conjugated electron-rich donors and electron-deficient acceptors in solution. The… (more)

Subjects/Keywords: donor-acceptor complex; donor-acceptor dyad; electron transfer; photophysical properties; quaterthiophene; side chains; Chemistry

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APA (6^th Edition):

Bheemaraju, A. (2011). Effect of Side Chains on Organic Donor (D) and Acceptor (A) Complexes and Photophysical Properties of D-A Dyads. (Doctoral Dissertation). U of Massachusetts : PhD. Retrieved from https://scholarworks.umass.edu/open_access_dissertations/427

Chicago Manual of Style (16^th Edition):

Bheemaraju, Amarnath. “Effect of Side Chains on Organic Donor (D) and Acceptor (A) Complexes and Photophysical Properties of D-A Dyads.” 2011. Doctoral Dissertation, U of Massachusetts : PhD. Accessed March 06, 2021. https://scholarworks.umass.edu/open_access_dissertations/427.

MLA Handbook (7^th Edition):

Bheemaraju, Amarnath. “Effect of Side Chains on Organic Donor (D) and Acceptor (A) Complexes and Photophysical Properties of D-A Dyads.” 2011. Web. 06 Mar 2021.

Vancouver:

Bheemaraju A. Effect of Side Chains on Organic Donor (D) and Acceptor (A) Complexes and Photophysical Properties of D-A Dyads. [Internet] [Doctoral dissertation]. U of Massachusetts : PhD; 2011. [cited 2021 Mar 06]. Available from: https://scholarworks.umass.edu/open_access_dissertations/427.

Council of Science Editors:

Bheemaraju A. Effect of Side Chains on Organic Donor (D) and Acceptor (A) Complexes and Photophysical Properties of D-A Dyads. [Doctoral Dissertation]. U of Massachusetts : PhD; 2011. Available from: https://scholarworks.umass.edu/open_access_dissertations/427

University of New Mexico

8. Habel-Rodriguez, Diana. Spectroscopic and Computational Electronic Structure Studies of Donor-Acceptor Systems.

Degree: Department of Chemistry and Chemical Biology, 2013, University of New Mexico

URL: https://digitalrepository.unm.edu/chem_etds/28

► Three molecular systems have been studied, which exhibit strong intramolecular electronic communication between constituent moieties. Experimental results for electronic absorption, resonance Raman, electron paramagnetic resonance… (more)

▼ Three molecular systems have been studied, which exhibit strong intramolecular electronic communication between constituent moieties. Experimental results for electronic absorption, resonance Raman, electron paramagnetic resonance (EPR), and magnetic circular dichroism (MCD) spectroscopies are presented. Density functional theory (DFT) electronic structure calculations were employed to augment the interpretation of experimental results. Using a valence bond configuration interaction (VBCI) model we show that the ground state properties of the molecules are influenced by excited state configurations. Donor ( = semiquinone)-bridge-acceptor ( = nitronylnitroxide) biradicals show strong ferromagnetic donor-acceptor coupling, and contributions to the ferromagnetic coupling from spin delocalization and spin polarization mechanisms are discussed. We explore effects of bridge substitutions on donor-acceptor coupling, where the bridge can be phenyl, thiophene, biphenyl, bithiophene, xylene, or other sterically hindered phenyl-derivatives. Meta connectivity of the Donor and Acceptor on a phenyl bridge results in antiferromagnetic donor-acceptor coupling, while para connectivity results in ferromagnetic exchange coupling. In this dissertation we discuss in detail the mechanisms for the observed exchange coupling. The heterobimetallic active site of the carbon monoxide dehydrogenase (CODH) enzyme catalyzes the oxidation of carbon monoxide to carbon dioxide in presence of water. Mechanisms presented in the literature differ in their description of how the [MoSCu] unit functions to catalyze CO oxidation. Computational and spectroscopic studies of synthetic CODH active site models show that electronic transitions below ~27000 cm-1 are Cu → Mo charge transfer in nature, and the observation of large isotropic Cu hyperfine coupling to the Mo(V) confirms the importance of Cu \u2192 Mo charge transfer excited states to covalency within the [MoSCu] unit. The large covalency across the [MoSCu] unit in both the enzyme and models points to a likely role of the [MoSCu] unit in the transfer of electrons between CO and Mo(VI). Calculated geometric and electronic changes for CO binding to the Cu(I) site are discussed. The Re2X4(PMe3)4PF6 compounds (X = Cl, Br) are highly symmetric Re dimers with a bond order of 3.5 that includes a partial δ bond. Spectroscopic and computational data of the δ→δ* band show that the contribution of the δ bond to the Re-Re bonding is small. Bonding calculations show that antibonding interactions of the halide and trimethylphosphine ligands with the Re d-orbital manifold dictate the energetic ordering of the Re d-orbitals. Advisors/Committee Members: Kirk, Martin L., Atlas, Susan R., Kemp, Richard A., Guo, Hua.

Subjects/Keywords: rhenium; valence bond configuration interaction; carbon monoxide dehydrogenase; donor-acceptor; donor; acceptor; biradical

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Habel-Rodriguez, D. (2013). Spectroscopic and Computational Electronic Structure Studies of Donor-Acceptor Systems. (Doctoral Dissertation). University of New Mexico. Retrieved from https://digitalrepository.unm.edu/chem_etds/28

Chicago Manual of Style (16^th Edition):

Habel-Rodriguez, Diana. “Spectroscopic and Computational Electronic Structure Studies of Donor-Acceptor Systems.” 2013. Doctoral Dissertation, University of New Mexico. Accessed March 06, 2021. https://digitalrepository.unm.edu/chem_etds/28.

MLA Handbook (7^th Edition):

Habel-Rodriguez, Diana. “Spectroscopic and Computational Electronic Structure Studies of Donor-Acceptor Systems.” 2013. Web. 06 Mar 2021.

Vancouver:

Habel-Rodriguez D. Spectroscopic and Computational Electronic Structure Studies of Donor-Acceptor Systems. [Internet] [Doctoral dissertation]. University of New Mexico; 2013. [cited 2021 Mar 06]. Available from: https://digitalrepository.unm.edu/chem_etds/28.

Council of Science Editors:

Habel-Rodriguez D. Spectroscopic and Computational Electronic Structure Studies of Donor-Acceptor Systems. [Doctoral Dissertation]. University of New Mexico; 2013. Available from: https://digitalrepository.unm.edu/chem_etds/28

Johannes Gutenberg Universität Mainz

9. Medjanik, Katerina. Electron spectroscopy of novel charge transfer systems based on polycyclic aromatic hydrocarbons.

Degree: 2011, Johannes Gutenberg Universität Mainz

URL: http://ubm.opus.hbz-nrw.de/volltexte/2011/2819/

► Organische Ladungstransfersysteme weisen eine Vielfalt von konkurrierenden Wechselwirkungen zwischen Ladungs-, Spin- und Gitterfreiheitsgraden auf. Dies führt zu interessanten physikalischen Eigenschaften, wie metallische Leitfähigkeit, Supraleitung und… (more)

▼ Organische Ladungstransfersysteme weisen eine Vielfalt von konkurrierenden Wechselwirkungen zwischen Ladungs-, Spin- und Gitterfreiheitsgraden auf. Dies führt zu interessanten physikalischen Eigenschaften, wie metallische Leitfähigkeit, Supraleitung und Magnetismus. Diese Dissertation beschäftigt sich mit der elektronischen Struktur von organischen Ladungstransfersalzen aus drei Material-Familien. Dabei kamen unterschiedliche Photoemissions- und Röntgenspektroskopietechniken zum Einsatz. Die untersuchten Moleküle wurden z.T. im MPI für Polymerforschung synthetisiert. Sie stammen aus der Familie der Coronene (Donor Hexamethoxycoronen HMC und Akzeptor Coronen-hexaon COHON) und Pyrene (Donor Tetra- und Hexamethoxypyren TMP und HMP) im Komplex mit dem klassischen starken Akzeptor Tetracyanoquinodimethan (TCNQ). Als dritte Familie wurden Ladungstransfersalze der k-(BEDT-TTF)2X Familie (X ist ein monovalentes Anion) untersucht. Diese Materialien liegen nahe bei einem Bandbreite-kontrollierten Mottübergang im Phasendiagramm.rnFür Untersuchungen mittels Ultraviolett-Photoelektronenspektroskopie (UPS) wurden UHV-deponierte dünne Filme erzeugt. Dabei kam ein neuer Doppelverdampfer zum Einsatz, welcher speziell für Milligramm-Materialmengen entwickelt wurde. Diese Methode wies im Ladungstransferkomplex im Vergleich mit der reinen Donor- und Akzeptorspezies energetische Verschiebungen von Valenzzuständen im Bereich weniger 100meV nach. Ein wichtiger Aspekt der UPS-Messungen lag im direkten Vergleich mit ab-initio Rechnungen.rnDas Problem der unvermeidbaren Oberflächenverunreinigungen von lösungsgezüchteten 3D-Kristallen wurde durch die Methode Hard-X-ray Photoelectron Spectroscopy (HAXPES) bei Photonenenergien um 6 keV (am Elektronenspeicherring PETRA III in Hamburg) überwunden. Die große mittlere freie Weglänge der Photoelektronen im Bereich von 15 nm resultiert in echter Volumensensitivität. Die ersten HAXPES Experimente an Ladungstransferkomplexen weltweit zeigten große chemische Verschiebungen (mehrere eV). In der Verbindung HMPx-TCNQy ist die N1s-Linie ein Fingerabdruck der Cyanogruppe im TCNQ und zeigt eine Aufspaltung und einen Shift zu höheren Bindungsenergien von bis zu 6 eV mit zunehmendem HMP-Gehalt. Umgekehrt ist die O1s-Linie ein Fingerabdruck der Methoxygruppe in HMP und zeigt eine markante Aufspaltung und eine Verschiebung zu geringeren Bindungsenergien (bis zu etwa 2,5eV chemischer Verschiebung), d.h. eine Größenordnung größer als die im Valenzbereich.rnAls weitere synchrotronstrahlungsbasierte Technik wurde Near-Edge-X-ray-Absorption Fine Structure (NEXAFS) Spektroskopie am Speicherring ANKA Karlsruhe intensiv genutzt. Die mittlere freie Weglänge der niederenergetischen Sekundärelektronen (um 5 nm). Starke Intensitätsvariationen von bestimmten Vorkanten-Resonanzen (als Signatur der unbesetzte Zustandsdichte) zeigen unmittelbar die Änderung der Besetzungszahlen der beteiligten Orbitale in der unmittelbaren Umgebung des angeregten Atoms. Damit war es möglich, präzise die Beteiligung spezifischer Orbitale im…

Subjects/Keywords: Ladungstransfersysteme, Photoelektronenspektroskopie, Donor, Akzeptor; Charge Transfer Systems, Photoelectron Spectroscopy, Donor, Acceptor; Physics

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APA (6^th Edition):

Medjanik, K. (2011). Electron spectroscopy of novel charge transfer systems based on polycyclic aromatic hydrocarbons. (Doctoral Dissertation). Johannes Gutenberg Universität Mainz. Retrieved from http://ubm.opus.hbz-nrw.de/volltexte/2011/2819/

Chicago Manual of Style (16^th Edition):

Medjanik, Katerina. “Electron spectroscopy of novel charge transfer systems based on polycyclic aromatic hydrocarbons.” 2011. Doctoral Dissertation, Johannes Gutenberg Universität Mainz. Accessed March 06, 2021. http://ubm.opus.hbz-nrw.de/volltexte/2011/2819/.

MLA Handbook (7^th Edition):

Medjanik, Katerina. “Electron spectroscopy of novel charge transfer systems based on polycyclic aromatic hydrocarbons.” 2011. Web. 06 Mar 2021.

Vancouver:

Medjanik K. Electron spectroscopy of novel charge transfer systems based on polycyclic aromatic hydrocarbons. [Internet] [Doctoral dissertation]. Johannes Gutenberg Universität Mainz; 2011. [cited 2021 Mar 06]. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2011/2819/.

Council of Science Editors:

Medjanik K. Electron spectroscopy of novel charge transfer systems based on polycyclic aromatic hydrocarbons. [Doctoral Dissertation]. Johannes Gutenberg Universität Mainz; 2011. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2011/2819/

University of Florida

10. Cekli, Seda. Triplet State Properties of Pi-Conjugated Donor-Acceptor-Donor Chromophores.

Degree: PhD, Chemistry, 2015, University of Florida

URL: https://ufdc.ufl.edu/UFE0049520

► The goal of this research is to study and improve the understanding of the triplet state properties of Donor-Acceptor-Donor (DAD) type of chromophores. Despite the… (more)

Subjects/Keywords: Absorption spectra; Atoms; Chromophores; Electrons; Fluorescence; Molecules; Orbitals; Platinum; Polymers; Selenium; donor-acceptor-donor – triplet

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cekli, S. (2015). Triplet State Properties of Pi-Conjugated Donor-Acceptor-Donor Chromophores. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0049520

Chicago Manual of Style (16^th Edition):

Cekli, Seda. “Triplet State Properties of Pi-Conjugated Donor-Acceptor-Donor Chromophores.” 2015. Doctoral Dissertation, University of Florida. Accessed March 06, 2021. https://ufdc.ufl.edu/UFE0049520.

MLA Handbook (7^th Edition):

Cekli, Seda. “Triplet State Properties of Pi-Conjugated Donor-Acceptor-Donor Chromophores.” 2015. Web. 06 Mar 2021.

Vancouver:

Cekli S. Triplet State Properties of Pi-Conjugated Donor-Acceptor-Donor Chromophores. [Internet] [Doctoral dissertation]. University of Florida; 2015. [cited 2021 Mar 06]. Available from: https://ufdc.ufl.edu/UFE0049520.

Council of Science Editors:

Cekli S. Triplet State Properties of Pi-Conjugated Donor-Acceptor-Donor Chromophores. [Doctoral Dissertation]. University of Florida; 2015. Available from: https://ufdc.ufl.edu/UFE0049520

RMIT University

11. Raynor, A. Synthesis of novel small molecules for use in bulk heterojunction solar cells.

Degree: 2016, RMIT University

URL: http://researchbank.rmit.edu.au/view/rmit:161715

► Solar power is fast becoming the “go-to” form of renewable energy. The most likely reason for this is the ease at which solar panels can… (more)

▼ Solar power is fast becoming the “go-to” form of renewable energy. The most likely reason for this is the ease at which solar panels can be installed on private residences and other buildings. Government incentives and rebates in countries such as Australia have also spurred along the industry making it an affordable option for the public as well as private business. Although silicon-based panels offer moderate efficiencies and a decent return on investment newer technologies, in particular organic photovoltaics, offer an exciting alternative with the potential to give cheaper power devices with lower impact on the environment. In this body of work, the synthesis of several acceptor and donor compounds used with in the bulk-heterjunction (BHJ) architecture organic photovoltaic device, is presented. The donor compounds, AS-1 and AS-2, were designed in order to investigate the effect that insertion of a thiophene pi-spacer would have of the properties of a triphenyl amine donor-acceptor-donor (D-A-D) compound. Results showed that the thiophene containing compound (AS-2) had far superior optical and electronic properties compaired to AS-1 as well as experiencing no ill effects on solubility or processability despite having no solubilizing alkyl chains. The thiophene insertion resulted in a lowering of the band-gap, increased light harvesting ability and superior electronic performance. In simple bulkheterjuction cells using PCBM61 as an electron acceptor AS1 gave an open circuit voltage (Voc) of 0.90 V, a current density (Jsc) of 3.15mA/cm2 and a power conversion efficiency (PCE) of 1.23%. AS2 however greatly outpaced its counterpart with thanks to the thiophene spacer with a Voc of 0.88 V, Jsc of 8.01 mA/cm2 and a PCE of 4.01%. The acceptor compounds consisted of two groups; class-A and class-N compounds. Both class of compounds contained diketopyrrolopyrrole (DPP) as either the central (class-A) or terminal (class-N) moiety. For the class-N compounds N6 and N7 were designed and synthesised. N6 contained a benzothiadiazole central unit with two DPP moieties attached to create an A-D-A structure. The compound exhibited a strong absorption in the visible range and appropriate HOMO/LUMO energy levels to be paired with poly-3-hexyl thiophene (P3HT). When paired with the ever-versatile electron donor P3HT in a 1:1 blend in a bulk-heterojunction device architecture it gave a Voc of 1.08 V, Jsc of 2.06 mA/cm2 and a PCE of 1.08%. At the time of testing this was one of the best performing non-fullerene DPP containing small molecules. N7 was a similar construction to N6, differing in the central moiety. N7 used an N-alkyl substituted carbazole moiety as the central unit. The compound also gave strong absorption in the visible region with appropriately placed HOMO/LUMO levels. When paired with P3HT in a 1:1.2 ratio. A Voc of 1.17 V, Jsc of 3.16 mA/cm2 and a PCE of 2.30% were recorded. Using N7 in these devices required no special treatment and the results obtained from them are among the highest values for…

Subjects/Keywords: Fields of Research; solar; dpp; synthesis; small molecule; donor; acceptor

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APA (6^th Edition):

Raynor, A. (2016). Synthesis of novel small molecules for use in bulk heterojunction solar cells. (Thesis). RMIT University. Retrieved from http://researchbank.rmit.edu.au/view/rmit:161715

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Raynor, A. “Synthesis of novel small molecules for use in bulk heterojunction solar cells.” 2016. Thesis, RMIT University. Accessed March 06, 2021. http://researchbank.rmit.edu.au/view/rmit:161715.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Raynor, A. “Synthesis of novel small molecules for use in bulk heterojunction solar cells.” 2016. Web. 06 Mar 2021.

Vancouver:

Raynor A. Synthesis of novel small molecules for use in bulk heterojunction solar cells. [Internet] [Thesis]. RMIT University; 2016. [cited 2021 Mar 06]. Available from: http://researchbank.rmit.edu.au/view/rmit:161715.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Raynor A. Synthesis of novel small molecules for use in bulk heterojunction solar cells. [Thesis]. RMIT University; 2016. Available from: http://researchbank.rmit.edu.au/view/rmit:161715

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Texas

12. Obondi, Christopher O. High-Energy, Long-Lived Charge Separated States via Molecular Engineering of Triplet State Donor-Acceptor Systems.

Degree: 2018, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc1248463/

► Molecular engineering of donor-acceptor dyads and multimodular systems to control the yield and lifetime of charge separation is one of the key goals of artificial… (more)

▼ Molecular engineering of donor-acceptor dyads and multimodular systems to control the yield and lifetime of charge separation is one of the key goals of artificial photosynthesis for harvesting sustainably solar energy. The design of the donor-acceptor systems mimic a part of green plants and bacterial photosynthetic processes. The photochemical events in natural photosynthesis involve the capturing and funneling of solar energy by a group of well-organized chromophores referred to as an ‘antenna' system causing an electron transfer into the ‘reaction center,' where an electron transfer processes occur resulting a long-lived charge separated state. Over the last two to three decades, many efforts have been directed by the scientific community designing of multi-modular systems that are capable of capturing most of the useful sunlight and generating charge separated states of prolonged lifetimes with adequate amounts of energy. In this dissertation, we report on the design and synthesis of donor–acceptor conjugates with the goal of modulating the yield and lifetime of their charge separated states and hence, improving the conversion of light energy into chemical potential. In simple donor-acceptor systems, generally, the energy and electron transfer events originate from the singlet excited state of the donor or acceptor and can store the greatest amount of energy but must be fast to out compete intersystem crossing. To address this limitation, we have designed novel donor –acceptor conjugates that use high-energy triplet sensitizers in which electron transfer is initiated from the long lived triplet state of the donor. The triplet photosensitizers used were palladium(II) porphyrin and platinum(II) porphyrin. Heavy metal effect in these porphyrins promoted intersystem crossing and the energies of their excited state was quite high. For the case of palladium (II) porphyrin the energy stored was found to 1.89 eV and that of platinum(II) porphyrin 1.84 eV. In addition to using triplet photosensitizers as donors, we have used donors that are difficult to oxidize and hence producing long lived charge separated states with adequate amount of stored energy. The system that was used for this study is zinc porphyrin with meso-aryl pentafluorophenyl substituents and fullerene, C60 as the acceptor. The presence of fluorine substituents on zinc porphyrin makes it harder to undergo oxidation. When this high potential donor-acceptor system undergoes a photoinduced charge-separation, the estimated energy stored was found to be 1.70 eV, one of the highest reported in literature so far. To further extend the lifetime of the charge separated states generated in this high-potential zinc porphyrin-fullerene dyad a pyridine functionalized tetrathiafulvalene was axially coordinated to the Zn metal producing a supramolecular triad capable of producing long-lived charge separated state. In a subsequent study, a multi-modular donor-acceptor system composed of a porphyrin, fullerene (C60) and a BF2-chelated dipyrromethene (BODIPY) with a… Advisors/Committee Members: D'Souza, Francis, Richmond, Michael, Golden, Teresa, Cundari, Tom.

Subjects/Keywords: Donor-Acceptor systems; Triplet sensitizers; Photoinduced charge-separation; Chemistry, Organic

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Obondi, C. O. (2018). High-Energy, Long-Lived Charge Separated States via Molecular Engineering of Triplet State Donor-Acceptor Systems. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc1248463/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Obondi, Christopher O. “High-Energy, Long-Lived Charge Separated States via Molecular Engineering of Triplet State Donor-Acceptor Systems.” 2018. Thesis, University of North Texas. Accessed March 06, 2021. https://digital.library.unt.edu/ark:/67531/metadc1248463/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Obondi, Christopher O. “High-Energy, Long-Lived Charge Separated States via Molecular Engineering of Triplet State Donor-Acceptor Systems.” 2018. Web. 06 Mar 2021.

Vancouver:

Obondi CO. High-Energy, Long-Lived Charge Separated States via Molecular Engineering of Triplet State Donor-Acceptor Systems. [Internet] [Thesis]. University of North Texas; 2018. [cited 2021 Mar 06]. Available from: https://digital.library.unt.edu/ark:/67531/metadc1248463/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Obondi CO. High-Energy, Long-Lived Charge Separated States via Molecular Engineering of Triplet State Donor-Acceptor Systems. [Thesis]. University of North Texas; 2018. Available from: https://digital.library.unt.edu/ark:/67531/metadc1248463/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Texas

13. Webre, Whitney Ann. Spectral, Electrochemical, Electron Transfer, and Photoelectrochemical Studies of Tetrapyrrole Derived Supramolecular Systems.

Degree: 2019, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc1609091/

► Energy- and electron-transfer processes in molecular and supramolecular donor-acceptor systems are of current interest in order to develop light-energy harvesting systems through designing covalently linked… (more)

Subjects/Keywords: electrochemistry; porphyrin; oxoporphyrinogen; donor-acceptor systems; Chemistry, Analytical; Chemistry, Organic

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Webre, W. A. (2019). Spectral, Electrochemical, Electron Transfer, and Photoelectrochemical Studies of Tetrapyrrole Derived Supramolecular Systems. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc1609091/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Webre, Whitney Ann. “Spectral, Electrochemical, Electron Transfer, and Photoelectrochemical Studies of Tetrapyrrole Derived Supramolecular Systems.” 2019. Thesis, University of North Texas. Accessed March 06, 2021. https://digital.library.unt.edu/ark:/67531/metadc1609091/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Webre, Whitney Ann. “Spectral, Electrochemical, Electron Transfer, and Photoelectrochemical Studies of Tetrapyrrole Derived Supramolecular Systems.” 2019. Web. 06 Mar 2021.

Vancouver:

Webre WA. Spectral, Electrochemical, Electron Transfer, and Photoelectrochemical Studies of Tetrapyrrole Derived Supramolecular Systems. [Internet] [Thesis]. University of North Texas; 2019. [cited 2021 Mar 06]. Available from: https://digital.library.unt.edu/ark:/67531/metadc1609091/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Webre WA. Spectral, Electrochemical, Electron Transfer, and Photoelectrochemical Studies of Tetrapyrrole Derived Supramolecular Systems. [Thesis]. University of North Texas; 2019. Available from: https://digital.library.unt.edu/ark:/67531/metadc1609091/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Johannesburg

14. Renison, Carina Alicia. Substituent effects in triarylphosphines.

Degree: 2012, University of Johannesburg

URL: http://hdl.handle.net/10210/6353

►

M.Sc.

The main objective of the work presented in this dissertation was to investigate the application of the phosphorus atom as a probe to evaluate… (more)

▼

M.Sc.

The main objective of the work presented in this dissertation was to investigate the application of the phosphorus atom as a probe to evaluate stereo-electronic effects in arylphosphines. Traditionally, electronic effects are described as having inductive or resonance origins. In addition to the aforementioned mechanisms, the possibility of an additional field effect pathway was also investigated. For this purpose, a series of ortho, meta and para mono-substituted triaryl phosphines, i.e. Ph2(C6H4-X), were synthesised using a lithium-halogen exchange pathway. This series included a selection of electron-withdrawing and electron-donating substituents (X = F, CN, COOtBu, Me, OMe, NMe2) as well as combinations of these. Most of these ligands are crystalline which allowed analysis of their electronic nature by means of X-ray crystallography. From these ligands a representative range of electron-donating and electron-withdrawing aryl substituted phosphines was chosen to collect high-resolution (d=0.5 Å) data. An aspherical multipole refinement was carried out on each of the high-resolution data sets by employing the Hansen Coppens multipole formalism. This was followed by an experimental charge density analysis of each phosphine by employing the principles of QTAIM employed in WinXD. From topological analysis of the Laplacian of the electron density, properties at the (3,-3) lone pair critical points were evaluated. Similarly, the density properties at the (3,-1) bond critical points of the P-Cipso bond were evaluated by analysis of the topology of the electron density. In addition, several integrated properties including the volume, charge and electron population of the phosphorus atom were evaluated. All of the above properties showed very good linear correlations with the infrared CO stretching frequencies of the Rh-Vaska-type complexes corresponding to these phosphines. Furthermore, computational chemistry was employed as a complementary investigation tool to the X-ray crystallographic study. A theoretical charge density study was conducted for the complete range of phosphines described above in paragraph 1 of this Synopsis by employing the principles of QTAIM employed in AIMAll. All of the properties mentioned in the above paragraph were also calculated. In addition, the calculated molecular electrostatic potential properties of the phosphorus lone pair (Vmin and dcp), the integrated substituent bond dipole and NBO (Natural bond orbital) analysis was used to evaluate substituent electronic effects. All of the calculated properties (with the exception of the charge and electron population of the phosphorus atom calculated from NBO analysis) showed good linear correlations with the infrared CO stretching frequencies of the Vaska-type complexes corresponding to these phosphines within a particular electron-withdrawing/electron-donating or ortho/meta and para series. In addition, very ii good linear correlations were obtained between the experimental and theoretical properties within a particular…

Subjects/Keywords: X-ray crystallography; Phosphine; Ligands; Electron donor-acceptor complexes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Renison, C. A. (2012). Substituent effects in triarylphosphines. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/6353

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Renison, Carina Alicia. “Substituent effects in triarylphosphines.” 2012. Thesis, University of Johannesburg. Accessed March 06, 2021. http://hdl.handle.net/10210/6353.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Renison, Carina Alicia. “Substituent effects in triarylphosphines.” 2012. Web. 06 Mar 2021.

Vancouver:

Renison CA. Substituent effects in triarylphosphines. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/10210/6353.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Renison CA. Substituent effects in triarylphosphines. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/6353

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Oxford

15. Caulfield, Jason M. Magnetic quantum oscillations in organic metals based on the molecule bis(ethylenedithio)tetrathiafulvalene.

Degree: PhD, 1994, University of Oxford

URL: http://ora.ox.ac.uk/objects/uuid:5fbf2599-96d8-4eac-b882-ac74213ac3a5 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240621

► ET charge transfer salts (where ET is <en>bis(ethylenedithio)- tetrathiafulvalene) have relatively simple quasi two-dimensional Fermi surface topologies, making them ideal for the study of the… (more)

▼ ET charge transfer salts (where ET is <en>bis(ethylenedithio)- tetrathiafulvalene) have relatively simple quasi two-dimensional Fermi surface topologies, making them ideal for the study of the relationship between bandstructure and properties such as superconductivity. Experimental studies of the Fermi surface areas and associated effective masses have been carried out using the Shubnikov-de Haas (SdH) and de Haas-van Alphen (dHvA) effects. By comparing the experimental results to theoretical bandstructure calculations the strength of many body interactions has been estimated. High pressure magnetotransport experiments have been carried out on the superconductor κ-ET₂Cu(NCS)₂. The observation of SdH and magnetic breakdown oscillations has allowed the pressure dependences of the Fermi surface topology and effective masses to be deduced and compared with simultaneous measurements of the superconducting critical temperature. The data strongly suggest that the enhancement of the effective mass and the superconducting behaviour are directly connected. The results are compared with several current theories of superconductivity. The dHvA effect has been used to probe the superconducting mixed state of κ-ET₂Cu(NCS)₂. A recent model of the superconducting mixed state is applied to the experimental data in an attempt to determine the value and symmetry of the superconducting energy gap. SdH measurements up to 30 T have been used to study spin densitywave formation in α-ET₂KHg(SCN)₄, and the reasons why a very slight increase of the unit cell volume (i.e. replacing the K in α-ET₂KHg(SCN)₄ by NH₄) stabilises a superconducting state. Galvanomagnetic techniques have been used to measure the quasi onedimensional Fermi surface orientation below the spin-density-wave transition, and to accurately determine the shape of the quasi twodimensional Fermi surface above it. The application of pressure has been used to gradually reduce the onset temperature of a metal-insulator transition and to eventually stabilise a superconducting state in ET₃Cl₂2H₂O. The bandstructure of ET₃C1₂2H₂O has been investigated using the SdH effect whilst hydrostatic pressure has been used to pass through the superconducting part of the phase diagram.

Subjects/Keywords: 530.41; Electron donor-acceptor complexes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Caulfield, J. M. (1994). Magnetic quantum oscillations in organic metals based on the molecule bis(ethylenedithio)tetrathiafulvalene. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:5fbf2599-96d8-4eac-b882-ac74213ac3a5 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240621

Chicago Manual of Style (16^th Edition):

Caulfield, Jason M. “Magnetic quantum oscillations in organic metals based on the molecule bis(ethylenedithio)tetrathiafulvalene.” 1994. Doctoral Dissertation, University of Oxford. Accessed March 06, 2021. http://ora.ox.ac.uk/objects/uuid:5fbf2599-96d8-4eac-b882-ac74213ac3a5 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240621.

MLA Handbook (7^th Edition):

Caulfield, Jason M. “Magnetic quantum oscillations in organic metals based on the molecule bis(ethylenedithio)tetrathiafulvalene.” 1994. Web. 06 Mar 2021.

Vancouver:

Caulfield JM. Magnetic quantum oscillations in organic metals based on the molecule bis(ethylenedithio)tetrathiafulvalene. [Internet] [Doctoral dissertation]. University of Oxford; 1994. [cited 2021 Mar 06]. Available from: http://ora.ox.ac.uk/objects/uuid:5fbf2599-96d8-4eac-b882-ac74213ac3a5 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240621.

Council of Science Editors:

Caulfield JM. Magnetic quantum oscillations in organic metals based on the molecule bis(ethylenedithio)tetrathiafulvalene. [Doctoral Dissertation]. University of Oxford; 1994. Available from: http://ora.ox.ac.uk/objects/uuid:5fbf2599-96d8-4eac-b882-ac74213ac3a5 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240621

University of Western Ontario

16. Tong, David. Synthesis of Functionalized Tetrahydropyridine Derivatives via SnCl4-Promoted [4+2] Cycloaddition of Donor-Acceptor Cyclobutanes and Nitriles.

Degree: 2019, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/6792

► The formation of carbon-heteroatom bonds is pivotal in obtaining structural frameworks present in a variety of important natural products and bioactive molecules. In that regard,… (more)

Subjects/Keywords: donor-acceptor; cyclobutane; cycloaddition; nitrile; tetrahydropyridine; Organic Chemistry

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tong, D. (2019). Synthesis of Functionalized Tetrahydropyridine Derivatives via SnCl4-Promoted [4+2] Cycloaddition of Donor-Acceptor Cyclobutanes and Nitriles. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/6792

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tong, David. “Synthesis of Functionalized Tetrahydropyridine Derivatives via SnCl4-Promoted [4+2] Cycloaddition of Donor-Acceptor Cyclobutanes and Nitriles.” 2019. Thesis, University of Western Ontario. Accessed March 06, 2021. https://ir.lib.uwo.ca/etd/6792.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tong, David. “Synthesis of Functionalized Tetrahydropyridine Derivatives via SnCl4-Promoted [4+2] Cycloaddition of Donor-Acceptor Cyclobutanes and Nitriles.” 2019. Web. 06 Mar 2021.

Vancouver:

Tong D. Synthesis of Functionalized Tetrahydropyridine Derivatives via SnCl4-Promoted [4+2] Cycloaddition of Donor-Acceptor Cyclobutanes and Nitriles. [Internet] [Thesis]. University of Western Ontario; 2019. [cited 2021 Mar 06]. Available from: https://ir.lib.uwo.ca/etd/6792.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tong D. Synthesis of Functionalized Tetrahydropyridine Derivatives via SnCl4-Promoted [4+2] Cycloaddition of Donor-Acceptor Cyclobutanes and Nitriles. [Thesis]. University of Western Ontario; 2019. Available from: https://ir.lib.uwo.ca/etd/6792

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

17. Curiel Tejeda, Joanne E. Synthesis of N-Heterocycles from Donor Acceptor Cyclopropanes and Progress towards Flinderole A, B, and C.

Degree: 2017, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/4908

► The first chapter of this thesis describes two projects, one explores the novel reactivity of quaternary donor acceptor cyclopropanes and the second one involves progress… (more)

Subjects/Keywords: donor acceptor cyclopropanes; pyrroloindoles; flinderoles; azabicycles; annulation reaction; organophosphine; Organic Chemistry

10 more images…

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APA (6^th Edition):

Curiel Tejeda, J. E. (2017). Synthesis of N-Heterocycles from Donor Acceptor Cyclopropanes and Progress towards Flinderole A, B, and C. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/4908

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Curiel Tejeda, Joanne E. “Synthesis of N-Heterocycles from Donor Acceptor Cyclopropanes and Progress towards Flinderole A, B, and C.” 2017. Thesis, University of Western Ontario. Accessed March 06, 2021. https://ir.lib.uwo.ca/etd/4908.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Curiel Tejeda, Joanne E. “Synthesis of N-Heterocycles from Donor Acceptor Cyclopropanes and Progress towards Flinderole A, B, and C.” 2017. Web. 06 Mar 2021.

Vancouver:

Curiel Tejeda JE. Synthesis of N-Heterocycles from Donor Acceptor Cyclopropanes and Progress towards Flinderole A, B, and C. [Internet] [Thesis]. University of Western Ontario; 2017. [cited 2021 Mar 06]. Available from: https://ir.lib.uwo.ca/etd/4908.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Curiel Tejeda JE. Synthesis of N-Heterocycles from Donor Acceptor Cyclopropanes and Progress towards Flinderole A, B, and C. [Thesis]. University of Western Ontario; 2017. Available from: https://ir.lib.uwo.ca/etd/4908

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of St. Andrews

18. Chalmers, Brian Alexander. A synthetic, spectroscopic and structural examination of phosphorus, arsenic and antimony peri-substituted acenaphthenes .

Degree: 2015, University of St. Andrews

URL: http://hdl.handle.net/10023/7061

► Donor–acceptor complexes have been known for over a century and enjoy a long list of applications in chemistry. In this thesis, the dative interaction between… (more)

▼ Donor–acceptor complexes have been known for over a century and enjoy a long list of applications in chemistry. In this thesis, the dative interaction between phosphorus and its two heavier congeners, arsenic and antimony, are explored. Utilising peri-substitution atoms can be forced in close proximity to one another, resulting in a repulsive (nonbonding) interaction or an attractive (bonding) interaction. Hence, peri-substitution can be used to support traditionally ephemeral species. A range of phosphorus, arsenic and antimony containing peri-substituted compounds were synthesised and characterised using multi-nuclear NMR, mass spectrometry, elemental microanalysis and single crystal X-ray diffraction. The reduction of a peri-substituted dichloroarsine, led to the formation of a primary arsine, which underwent spontaneous elimination of hydrogen gas forming the first structurally characterised cyclic arsanylidene–σ⁴–phosphorane, the formation of which is essentially thermoneutral. With no sterically demanding groups shielding the arsenic atom, the reactivity and spectroscopic characteristics of this compound were explored through reactions with selected metal complexes. Reaction of the arsanylidene–phosphorane with a limited amount of oxygen reveals arsinidene–like reactivity via the formation of cycloarsines, supporting the formulation that the bonding can be described as a Lewis base–stabilised arsinidene R₃P→AsR. A series of phosphine–stibine and phosphine–stiborane peri-substituted acenaphthenes containing all permutations of pentavalent groups –SbCl[sub]nPh[sub](4-n) as well as trivalent groups –SbCl₂, –Sb(R)Cl, and –SbPh₂ (R = Ph, Mes), were synthesised and characterised by multi-nuclear NMR, MS, microanalysis and X-ray crystallography. The bonding in these species was studied by DFT computational methods. The P–Sb dative interactions range from strongly bonding to nonbonding as the Lewis acidity of the Sb acceptor is decreased. Unexpectedly, the phosphine–stiborane complexes represent the first examples of σ⁴P→σ⁶Sb structural motif. A study of unsymmetrical bis(phosphino)acenaphthenes showed the presence of a 3c–4e interaction, supported by the short P∙∙∙P distances and the large J[sub](PP) through-space couplings. Severely strained bis(sulfides) of the unsymmetrical phosphines experience pronounced displacements of the exocyclic peri-atoms. The resulting nonbonded intramolecular P∙∙∙P distances (ca. 4.05 Å) are among the largest ever reported peri-separations, independent of the heteroatoms involved. In addition, three metal complexes with square planar, tetrahedral and octahedral geometry are reported. In all three cases, the acenaphthene backbone is distorted to a greater extent than in the free bis(phosphine) but notably less than in the bis(sulfides). Advisors/Committee Members: Kilian, Petr (advisor).

Subjects/Keywords: Arsenic; Antimony; Phosphorus; Donor-acceptor; Bonding; Structure; Acenaphthene; Spectroscopy; Arsinidene

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APA (6^th Edition):

Chalmers, B. A. (2015). A synthetic, spectroscopic and structural examination of phosphorus, arsenic and antimony peri-substituted acenaphthenes . (Thesis). University of St. Andrews. Retrieved from http://hdl.handle.net/10023/7061

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chalmers, Brian Alexander. “A synthetic, spectroscopic and structural examination of phosphorus, arsenic and antimony peri-substituted acenaphthenes .” 2015. Thesis, University of St. Andrews. Accessed March 06, 2021. http://hdl.handle.net/10023/7061.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chalmers, Brian Alexander. “A synthetic, spectroscopic and structural examination of phosphorus, arsenic and antimony peri-substituted acenaphthenes .” 2015. Web. 06 Mar 2021.

Vancouver:

Chalmers BA. A synthetic, spectroscopic and structural examination of phosphorus, arsenic and antimony peri-substituted acenaphthenes . [Internet] [Thesis]. University of St. Andrews; 2015. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/10023/7061.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chalmers BA. A synthetic, spectroscopic and structural examination of phosphorus, arsenic and antimony peri-substituted acenaphthenes . [Thesis]. University of St. Andrews; 2015. Available from: http://hdl.handle.net/10023/7061

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

19. Kota, Rajesh. Donor-Sigma-Acceptor (D-sigma-A) Molecules With Perylenebisimide Acceptors Having Alkyl or Peg Swallowtails With Sulfur or Hydroxyl Anchors: Synthesis and Applications in Langmuir-Blodgett Films, Single Molecule Spectroscopy (SMS), G-Quadruplex Studies and Passivation of Gold Nanoparticles.

Degree: PhD, Chemistry, 2012, University of Mississippi

URL: https://egrove.olemiss.edu/etd/173

► Use of single molecules as electronic devices is presently considered a potential alternative to semiconductor-based nanoscale electronics. The ability to study a single molecule or… (more)

▼ Use of single molecules as electronic devices is presently considered a potential alternative to semiconductor-based nanoscale electronics. The ability to study a single molecule or a small group of molecules provides a great opportunity to build electronic devices at the molecular level. It is vital to understand the parameters that control the device properties such as molecular structure, conformation and arrangement at the surface. Ari Aviram and Mark A. Ratner proposed the construction of a single organic molecule as an organic rectifier. Donor-Sigma-Acceptor (D-?-A ) molecules, when arranged with a proper orientation as Langmuir-Blodgett (LB) films and fixed between two electrodes, act as one-electron organic rectifiers (allowing the passage of current in one direction). In this work perylenetetracarboxylic bisanhydride is used as the acceptor. Perylenetetracarboxylic bisanhydride derivatives are very intractable (insoluble in all regular solvents). Attaching a swallowtail (alkyl or PEG) improves their solubility and helps in making a well-ordered LB monolayer. The project includes multistep syntheses of D-?-A molecules with alkyl swallowtails containing sulfur anchors (to induce stability to the LB monolayers and to make self assembled monolayers) and/or PEG swallowtails, with or without hydroxyl end groups (to investigate the orientation of the LB films). The alkyl swallowtail project includes making alkyl swallowtail amines with sulfur anchors and proceeding through a crucial perylene monoanhydride monoimide intermediate with two thioacetyl groups, using two different routes starting from 11-bromoundecanoic acid or undecylenic acid. These schemes include Fischer esterification, Claisen condensation, decarboxylation, reductive amination and radical thioester addition as key reactions. The PEG swallowtail project includes making PEG swallowtail amines with hydroxyl, chloro or sulfur end groups. These amines were made from 2-amino-1,3-propanediol and either hydroxyl or chloro tosylates. This scheme includes amine protection, Williamson ether synthesis and simultaneous imidization as key reactions. A dozen different swallowtail amines were attached to the perylenetetracarboxylic acceptor by imidization to make unsymmetrical perylene bisimides (PBI 's). Several donors, with different ionization energies, have been prepared and were coupled to perylenetetracarboxylic imide anhydrides to prepare the final D-?-A molecules. The dependence of the orientation of these molecules as LB films on the nature of swallowtail (PEG swallowtail, lipid thioacetate anchored swallowtail) was studied by pressure area ( II-A) isotherms and contact angle measurements. In addition to the application of the D-?-A molecules in Langmuir-Blodgett films, we found various applications of these molecules in single molecule spectroscopy (SMS), DNA binding studies to stabilize G-quadruplex, and passivation of gold nanoparticles. Advisors/Committee Members: Daniell L. Mattern, Chistopher R. McCurdy, Amala Dass.

Subjects/Keywords: Donor-Sigma-Acceptor; G-Quadruplex; Molecular Electronics; Organic Chemistry

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kota, R. (2012). Donor-Sigma-Acceptor (D-sigma-A) Molecules With Perylenebisimide Acceptors Having Alkyl or Peg Swallowtails With Sulfur or Hydroxyl Anchors: Synthesis and Applications in Langmuir-Blodgett Films, Single Molecule Spectroscopy (SMS), G-Quadruplex Studies and Passivation of Gold Nanoparticles. (Doctoral Dissertation). University of Mississippi. Retrieved from https://egrove.olemiss.edu/etd/173

Chicago Manual of Style (16^th Edition):

Kota, Rajesh. “Donor-Sigma-Acceptor (D-sigma-A) Molecules With Perylenebisimide Acceptors Having Alkyl or Peg Swallowtails With Sulfur or Hydroxyl Anchors: Synthesis and Applications in Langmuir-Blodgett Films, Single Molecule Spectroscopy (SMS), G-Quadruplex Studies and Passivation of Gold Nanoparticles.” 2012. Doctoral Dissertation, University of Mississippi. Accessed March 06, 2021. https://egrove.olemiss.edu/etd/173.

MLA Handbook (7^th Edition):

Kota, Rajesh. “Donor-Sigma-Acceptor (D-sigma-A) Molecules With Perylenebisimide Acceptors Having Alkyl or Peg Swallowtails With Sulfur or Hydroxyl Anchors: Synthesis and Applications in Langmuir-Blodgett Films, Single Molecule Spectroscopy (SMS), G-Quadruplex Studies and Passivation of Gold Nanoparticles.” 2012. Web. 06 Mar 2021.

Vancouver:

Kota R. Donor-Sigma-Acceptor (D-sigma-A) Molecules With Perylenebisimide Acceptors Having Alkyl or Peg Swallowtails With Sulfur or Hydroxyl Anchors: Synthesis and Applications in Langmuir-Blodgett Films, Single Molecule Spectroscopy (SMS), G-Quadruplex Studies and Passivation of Gold Nanoparticles. [Internet] [Doctoral dissertation]. University of Mississippi; 2012. [cited 2021 Mar 06]. Available from: https://egrove.olemiss.edu/etd/173.

Council of Science Editors:

Kota R. Donor-Sigma-Acceptor (D-sigma-A) Molecules With Perylenebisimide Acceptors Having Alkyl or Peg Swallowtails With Sulfur or Hydroxyl Anchors: Synthesis and Applications in Langmuir-Blodgett Films, Single Molecule Spectroscopy (SMS), G-Quadruplex Studies and Passivation of Gold Nanoparticles. [Doctoral Dissertation]. University of Mississippi; 2012. Available from: https://egrove.olemiss.edu/etd/173

University of North Texas

20. Song, Baiyun. Studies on High Potential Porphyrin-fullerene Supramolecular Dyads.

Degree: 2013, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc407825/

► Photoinduced electron transfer in self-assembled via axial coordination porphyrin-fullerene dyads is investigated. Fullerene functionalized with imidazole and fullerenes functionalized with pyridine are chosen as electron… (more)

Subjects/Keywords: Donor-acceptor system; artificial photosynthesis; light energy harvesting

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Song, B. (2013). Studies on High Potential Porphyrin-fullerene Supramolecular Dyads. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc407825/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Song, Baiyun. “Studies on High Potential Porphyrin-fullerene Supramolecular Dyads.” 2013. Thesis, University of North Texas. Accessed March 06, 2021. https://digital.library.unt.edu/ark:/67531/metadc407825/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Song, Baiyun. “Studies on High Potential Porphyrin-fullerene Supramolecular Dyads.” 2013. Web. 06 Mar 2021.

Vancouver:

Song B. Studies on High Potential Porphyrin-fullerene Supramolecular Dyads. [Internet] [Thesis]. University of North Texas; 2013. [cited 2021 Mar 06]. Available from: https://digital.library.unt.edu/ark:/67531/metadc407825/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Song B. Studies on High Potential Porphyrin-fullerene Supramolecular Dyads. [Thesis]. University of North Texas; 2013. Available from: https://digital.library.unt.edu/ark:/67531/metadc407825/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Simon Fraser University

21. Mobley, Michael Joseph. Spectroscopic studies of the conformations of [pi]-[pi] electron donor-acceptor complexes.

Degree: 1977, Simon Fraser University

URL: http://summit.sfu.ca/item/3055

Subjects/Keywords: Electron donor-acceptor complexes.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mobley, M. J. (1977). Spectroscopic studies of the conformations of [pi]-[pi] electron donor-acceptor complexes. (Thesis). Simon Fraser University. Retrieved from http://summit.sfu.ca/item/3055

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mobley, Michael Joseph. “Spectroscopic studies of the conformations of [pi]-[pi] electron donor-acceptor complexes.” 1977. Thesis, Simon Fraser University. Accessed March 06, 2021. http://summit.sfu.ca/item/3055.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mobley, Michael Joseph. “Spectroscopic studies of the conformations of [pi]-[pi] electron donor-acceptor complexes.” 1977. Web. 06 Mar 2021.

Vancouver:

Mobley MJ. Spectroscopic studies of the conformations of [pi]-[pi] electron donor-acceptor complexes. [Internet] [Thesis]. Simon Fraser University; 1977. [cited 2021 Mar 06]. Available from: http://summit.sfu.ca/item/3055.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mobley MJ. Spectroscopic studies of the conformations of [pi]-[pi] electron donor-acceptor complexes. [Thesis]. Simon Fraser University; 1977. Available from: http://summit.sfu.ca/item/3055

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

King Abdullah University of Science and Technology

22. Almansaf, Abdulkhaleq. Charge Carrier Dynamics at Silver Nanocluster-Molecular Acceptor Interfaces.

Degree: Physical Science and Engineering (PSE) Division, 2017, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/625307

► A fundamental understanding of interfacial charge transfer at donor-acceptor interfaces is very crucial as it is considered among the most important dynamical processes for optimizing… (more)

▼ A fundamental understanding of interfacial charge transfer at donor-acceptor interfaces is very crucial as it is considered among the most important dynamical processes for optimizing performance in many light harvesting systems, including photovoltaics and photo-catalysis. In general, the photo-generated singlet excitons in photoactive materials exhibit very short lifetimes because of their dipole-allowed spin radiative decay and short diffusion lengths. In contrast, the radiative decay of triplet excitons is dipole forbidden; therefore, their lifetimes are considerably longer. The discussion in this thesis primarily focuses on the relevant parameters that are involved in charge separation (CS), charge transfer (CT), intersystem crossing (ISC) rate, triplet state lifetime, and carrier recombination (CR) at silver nanocluster (NCs) molecular-acceptors interfaces. A combination of steady-state and femto- and nanosecond broadband transient absorption spectroscopies were used to investigate the charge carrier dynamics in various donor-acceptor systems. Additionally, this thesis was prolonged to investigate some important factors that influence the charge carrier dynamics in Ag29 silver NCs donor-acceptor systems, such as the metal doping and chemical structure of the nanocluster and molecular acceptors. Interestingly, clear correlations between the steady-state measurements and timeresolved spectroscopy results are found. In the first study, we have investigated the interfacial charge transfer dynamics in positively charged meso units of 5, 10, 15, 20-tetra (1- methyl-4-pyridino)-porphyrin tetra (p-toluene sulfonate) (TMPyP) and neutral charged 5, 10, 15, 20-tetra (4-pyridyl)-porphyrin (TPyP), with negatively charged undoped and gold (Au)- doped silver Ag29 NCs. Moreover, this study showed the impact of Au doping on the charge carrier dynamics of the system. In the second study, we have investigated the interfacial charge transfer dynamics in [Pt2 Ag23 Cl7 (PPh3)10] silver NCs doped with platinum (Pt), with neutral charged 5, 10, 15, 20-tetra (4-pyridyl)-porphyrin (TPyP). Here, we evaluated the effects of Pt (II) doping on the interfacial charge-transfer dynamics between TPyP and silver NCs. Advisors/Committee Members: Mohammed, Omar F. (advisor), Bakr, Osman (committee member), Takanabe, Kazuhiro (committee member).

Subjects/Keywords: Metal Nanocluster; Donor-Acceptor; Interfaces; Charge Transfer; Change Seperation

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APA (6^th Edition):

Almansaf, A. (2017). Charge Carrier Dynamics at Silver Nanocluster-Molecular Acceptor Interfaces. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/625307

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Almansaf, Abdulkhaleq. “Charge Carrier Dynamics at Silver Nanocluster-Molecular Acceptor Interfaces.” 2017. Thesis, King Abdullah University of Science and Technology. Accessed March 06, 2021. http://hdl.handle.net/10754/625307.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Almansaf, Abdulkhaleq. “Charge Carrier Dynamics at Silver Nanocluster-Molecular Acceptor Interfaces.” 2017. Web. 06 Mar 2021.

Vancouver:

Almansaf A. Charge Carrier Dynamics at Silver Nanocluster-Molecular Acceptor Interfaces. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2017. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/10754/625307.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Almansaf A. Charge Carrier Dynamics at Silver Nanocluster-Molecular Acceptor Interfaces. [Thesis]. King Abdullah University of Science and Technology; 2017. Available from: http://hdl.handle.net/10754/625307

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Sydney

23. Shepherd, Nicholas Daniel. Spiropyran and donor-acceptor Stenhouse adduct incorporation into Metal–Organic Framework materials .

Degree: 2020, University of Sydney

URL: http://hdl.handle.net/2123/24315

► Metal–Organic Frameworks (MOFs) have garnered significant interest due to their diverse range of potential applications. A burgeoning area of MOF research involves tuning the properties… (more)

Subjects/Keywords: Metal–Organic Frameworks; Spiropyran; donor-acceptor; Stenhouse adducts; modification

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Shepherd, N. D. (2020). Spiropyran and donor-acceptor Stenhouse adduct incorporation into Metal–Organic Framework materials . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/24315

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shepherd, Nicholas Daniel. “Spiropyran and donor-acceptor Stenhouse adduct incorporation into Metal–Organic Framework materials .” 2020. Thesis, University of Sydney. Accessed March 06, 2021. http://hdl.handle.net/2123/24315.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shepherd, Nicholas Daniel. “Spiropyran and donor-acceptor Stenhouse adduct incorporation into Metal–Organic Framework materials .” 2020. Web. 06 Mar 2021.

Vancouver:

Shepherd ND. Spiropyran and donor-acceptor Stenhouse adduct incorporation into Metal–Organic Framework materials . [Internet] [Thesis]. University of Sydney; 2020. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/2123/24315.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shepherd ND. Spiropyran and donor-acceptor Stenhouse adduct incorporation into Metal–Organic Framework materials . [Thesis]. University of Sydney; 2020. Available from: http://hdl.handle.net/2123/24315

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado State University

24. Lazorski, Megan. Photo-induced electron transfer in cu(i) bis-phenanthroline based assemblies. Part I: Chromophore-acceptor diads. Part II: Donor-chromophore-acceptor triads: Chromophore-acceptor diads: Donor-chromophore-acceptor triads.

Degree: PhD, Chemistry, 2013, Colorado State University

URL: http://hdl.handle.net/10217/78831

► The photophysical behavior of [Cu(I)P2] (P=2,9-disubstituted-1,10-phenanthroline ligands) in donor-chromophore-acceptor (D-C-A) triads and chromophore-acceptor (C-A) diads is a complex and fascinating area of under developed, yet… (more)

▼ The photophysical behavior of [Cu(I)P2] (P=2,9-disubstituted-1,10-phenanthroline ligands) in donor-chromophore-acceptor (D-C-A) triads and chromophore-acceptor (C-A) diads is a complex and fascinating area of under developed, yet fundamental, electron transfer chemistry. In metal polypyridyl D-C-A and C-A triads/diads, metal polypyridyl chromophores (C) in which the polypyridyl ligands are covalently linked to acceptor (A) and/or donor (D) moieties, photo-excitation of the chromophore initiates a series of electron transfer events that result in the formation of a charge separated (CS)/charge transfer (CT) state, respectively. The majority of high-performing metal polypyridyl D-C-A/C-A complexes, on which [Cu(I)P2] D-C-A/C-A research is based, incorporate ruthenium (as [Ru(II)L3] where L=polypyridyl ligand) or other rare, expensive, and sometimes toxic metals such as osmium, rhenium and platinum. Although [Ru(II)L3] D-C-A/C-A's have historically set the benchmark for metal polypyridyl D-C-A/C-A performance, it is clear that these complexes are not a practical choice if D-C-A's or C-A's were incorporated into a device for large scale production. However, bisphenanthroline complexes of copper, a much more earth abundant, cheaper and less toxic metal, exhibit very similar photophysical properties to [Ru(II)L3] and have thus gained recognition as promising new materials for D-C-A/C-A triad/diad construction. In order to understand the electron transfer (ET) events occurring in [Cu(I)P2] D-C-A/C-A triads/diads, a complex must be synthesized that is capable of forming a CS with high quantum efficiency (Φcs/ct) and a long CS/CT lifetime (τcs/ct). Therefore, the intent of the research reported herein is to synthesize novel, yet functional heteroleptic [Cu(I)P2] D-C-A/C-A triads/diads and study their fundamental, photo-initiated electron transfer chemistry, specifically the formation of a CS/CT state. Many challenges, which are not present for [Ru(II)L3], make the design and synthesis of [Cu(I)P2] D-C-A/C-A assemblies an art in itself. Therefore, a significant amount of effort was spent on fabricating ligand architectures that (1) are appended with acceptor and/or donor moieties capable of being reduced/oxidized resulting in the formation of a CS/CT, (2) are able to be easily modified so the amount of energy stored in the CS/CT can be tuned, (3) favor the self-assembly of [Cu(I)P2] complexes, (4) are able to facilitate processes that maximize the Φcs/ct. Once the ligands were obtained, the complexation equilibria behavior of these [Cu(I)P2] triads and diads were studied. Despite efforts to design ligand architectures that favor heteroleptic formation, the thermodynamic driving force for heteroleptic D-C-A triad formation is less favor-able than expected. Thus, mixing stoichiometric quantities of D, C and A results in a statistical mixture of C-A, C-D and D-C-A products. Furthermore, since the ligands are labile and will re-arrange to the most thermodynamically stable configuration of products when… Advisors/Committee Members: Elliott, C. Michael (advisor), Shores, Matthew P. (committee member), Chen, Eugene (committee member), Bailey, Travis S. (committee member), Sites, James R. (committee member).

Subjects/Keywords: copper bis-phenanthroline; charge separated state; solar fuels; D-C-A; donor-chromophore-acceptor; chromophore-acceptor diads

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lazorski, M. (2013). Photo-induced electron transfer in cu(i) bis-phenanthroline based assemblies. Part I: Chromophore-acceptor diads. Part II: Donor-chromophore-acceptor triads: Chromophore-acceptor diads: Donor-chromophore-acceptor triads. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/78831

Chicago Manual of Style (16^th Edition):

Lazorski, Megan. “Photo-induced electron transfer in cu(i) bis-phenanthroline based assemblies. Part I: Chromophore-acceptor diads. Part II: Donor-chromophore-acceptor triads: Chromophore-acceptor diads: Donor-chromophore-acceptor triads.” 2013. Doctoral Dissertation, Colorado State University. Accessed March 06, 2021. http://hdl.handle.net/10217/78831.

MLA Handbook (7^th Edition):

Lazorski, Megan. “Photo-induced electron transfer in cu(i) bis-phenanthroline based assemblies. Part I: Chromophore-acceptor diads. Part II: Donor-chromophore-acceptor triads: Chromophore-acceptor diads: Donor-chromophore-acceptor triads.” 2013. Web. 06 Mar 2021.

Vancouver:

Lazorski M. Photo-induced electron transfer in cu(i) bis-phenanthroline based assemblies. Part I: Chromophore-acceptor diads. Part II: Donor-chromophore-acceptor triads: Chromophore-acceptor diads: Donor-chromophore-acceptor triads. [Internet] [Doctoral dissertation]. Colorado State University; 2013. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/10217/78831.

Council of Science Editors:

Lazorski M. Photo-induced electron transfer in cu(i) bis-phenanthroline based assemblies. Part I: Chromophore-acceptor diads. Part II: Donor-chromophore-acceptor triads: Chromophore-acceptor diads: Donor-chromophore-acceptor triads. [Doctoral Dissertation]. Colorado State University; 2013. Available from: http://hdl.handle.net/10217/78831

Johannes Gutenberg Universität Mainz

25. Rieger, Ralph. Extended donor and acceptor molecules for organic electronics.

Degree: 2009, Johannes Gutenberg Universität Mainz

URL: http://ubm.opus.hbz-nrw.de/volltexte/2010/2237/

► Die Untersuchung von halbleitenden Materialien auf der Basis von organischen Molekülen stellt ein Gebiet der angewandten Forschung an der Schwelle zur industriellen Nutzung dar. Geringes… (more)

▼ Die Untersuchung von halbleitenden Materialien auf der Basis von organischen Molekülen stellt ein Gebiet der angewandten Forschung an der Schwelle zur industriellen Nutzung dar. Geringes Gewicht und hohe mechanische Flexibilität ermöglichen völlig neue Produkte, die mit anorganischen Halbleitern nicht zu realisieren sind. Die Herstellung von Bauteilen wie Transistoren, Solarzellen oder Leuchtdioden aus organischen Materialien ist ein komplexes Gebiet, das einer Vielzahl von unterschiedlichen Optimierungen bedarf, um eine konkurrenzfähige Leistung zu erreichen. Die synthetische organische Chemie bietet vielfältige Möglichkeiten, mit maßgeschneiderten Lösungen zum Optimierungsprozess beizutragen. Zum einen können neue aktive Materialien hergestellt werden mit besserer Leistung und leichterer Verarbeitbarkeit. Zum anderen sind Substanzen zugänglich, die z.B. bei der Ladungsträgerinjektion hilfreich sein können.rnIn dieser Arbeit wurde an beiden dieser Fronten gearbeitet. Dabei lag die Entwicklungsstrategie darin, ausgedehnte π-konjugierte Moleküle herzustellen, die entweder besonders elektronenarme Akzeptoren oder elektronenreiche Donoren darstellen. Die genaue Kontrolle der elektronischen Niveaus stellt einen wichtigen Bestandteil dar, um niedrige elektrische Kontaktbarrieren zu Metallen zu erreichen und ausreichend stabile Materialien zu erreichen.rnDer erste Fokus der Arbeiten lag in der Funktionalisierung von Coronen. Dieser PAH stellt einen guten Kompromiss bezüglich seiner Größe dar: Er ist groß genug, um Diffusion in andere Schichten von Bauteilen zu vermeiden, aber nicht zu groß, um Verarbeitung durch Vakuumsublimation zu ermöglichen. Bislang sind praktisch keine Coronen-Derivate in der Literatur beschrieben, weshalb eine neue Synthese entwickelt werden musste, die die Einführung starker Donor- und Akzeptorfunktionalitäten erlaubt. Die photochemische Cyclodehydrierung von substituierten [2.2.2]paracyclophan-trienen stellte sich als hervorragende Möglichkeit heraus, dies zu bewerkstelligen. Es wurde eine Reihe von methoxy-substitutierten Coronenen mit unterschiedlicher Symmetrie hergestellt. Mittels optischer Spektroskopie konnte gezeigt werden, dass Methoxygruppen wenig Einfluss auf die elektronischen Eigenschaften von Coronen haben. Unter Spaltung der Methylether und anschließender Oxidation allerdings sind Coronenketone zugänglich, welche bis zu drei α-Diketongruppen besitzen. Diese Moleküle sind enorm starke Akzeptoren, was durch Cyclovoltammetrie und Vergleich zu anderen Akzeptoren eindrucksvoll gezeigt werden konnte. Die Sublimation dieses Akzeptors auf die Oberfläche von Metallen zeigt einen dramatischen Einfluss auf die Austrittsarbeit dieses Metalls, was zur Herstellung eines ohmschen Kontakts zu organischen Halbleitern von außerordentlichem Nutzen ist. rnDen zweiten Teil der Arbeit bilden Benzodithiophen enthaltende Polymere, die für den Einsatz als aktive Komponente in elektronischen Bauteilen entwickelt wurden. Nach systematischer Strukturoptimierung wurde ein Polymer enthalten, welches in einem…

Subjects/Keywords: organische Elektronik, PAK, Polythiophen, Donor-Akzeptor, Synthese; organic electronics, PAH, polythiophene, donor acceptor, synthesis; Chemistry and allied sciences

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APA (6^th Edition):

Rieger, R. (2009). Extended donor and acceptor molecules for organic electronics. (Doctoral Dissertation). Johannes Gutenberg Universität Mainz. Retrieved from http://ubm.opus.hbz-nrw.de/volltexte/2010/2237/

Chicago Manual of Style (16^th Edition):

Rieger, Ralph. “Extended donor and acceptor molecules for organic electronics.” 2009. Doctoral Dissertation, Johannes Gutenberg Universität Mainz. Accessed March 06, 2021. http://ubm.opus.hbz-nrw.de/volltexte/2010/2237/.

MLA Handbook (7^th Edition):

Rieger, Ralph. “Extended donor and acceptor molecules for organic electronics.” 2009. Web. 06 Mar 2021.

Vancouver:

Rieger R. Extended donor and acceptor molecules for organic electronics. [Internet] [Doctoral dissertation]. Johannes Gutenberg Universität Mainz; 2009. [cited 2021 Mar 06]. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2010/2237/.

Council of Science Editors:

Rieger R. Extended donor and acceptor molecules for organic electronics. [Doctoral Dissertation]. Johannes Gutenberg Universität Mainz; 2009. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2010/2237/

Indian Institute of Science

26. Mukhopadhyay, Sukrit. Theoretical Studies Of Electronic Properties And Electronic Processes In Conjugated Molecules.

Degree: PhD, Faculty of Science, 2011, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/1265

► This thesis deals with theoretical studies of electronic properties of organic conjugated molecules. The first chapter introduces different classes of organic conjugated molecules which possess… (more)

▼ This thesis deals with theoretical studies of electronic properties of organic conjugated molecules. The first chapter introduces different classes of organic conjugated molecules which possess high hole mobility, large quadratic non-linear response and low band gap. In this chapter, we further describe different photo-physical processes and the basic principles of various opto-electronic devices. The second chapter provides an introduction to various many-body techniques, which are employed in studying ground and excited state properties of organic conjugated systems. First, we describe the Hartree-Fock theory and the Density Functional (DFT) method. These are followed by full Configuration-Interaction (CI) methods and various semi-empirical methods (CNDO, INDO and NDDO). The INDO method is used in subsequent chapters to obtain the ground and excited state properties of organic conjugated molecules. In addition, we describe the restricted CI (SCI and SDCI) and the Density Matrix Renormalization Group (DMRG) methods. The third chapter of this thesis deals with a time evolution study to ascertain the role of the triplet state in the green emission of the ethyl-hexyl substituted poly-fluorene (PF2/6) films. To understand this phenomenon, we have modeled various non-radiative processes like (i) Inter-System Crossing (ISC), (ii) electron-hole Recombination (e-hR) and (iii) Triplet Quenching (TQ). These studies conclusively prove the contribution of triplet states to the 500 nm EL peak. In chapter four, we describe the origin of the unusual EL in tri-p-tolylamine (TTA) based hole conductors. In order to model this phenomenon, we have performed SCI calculations on TTA, its radical ions and allied hole conductors (TAPC and TPD). These calculations indicate that the unusual EL is due to low-lying charge-transfer (CT) state, which is stabilized by charge-dipole and charge-induced-dipole interactions. In chapter five, we turn our attention to the calculation of ground and excited state properties of a class of donor-acceptor (DA) system using ab-initio DFT and INDO methods. In these systems, DFT calculations along with INDO-SCI calculation, show strong intramolecular charge transfer interaction between the D and the A units. We have further calculated various properties like permanent dipole moments, oscillator strengths, Stoke’s shifts in various solvents etc. In chapter six, we focus on studying linear and non-linear optical properties of first generation nitrogen based dendrimers, using DMRG method. A novel scheme which includes the weights of the dipole allowed states in the computation of the density matrix is developed to obtain accurate dipole allowed excited states as well as the linear and nonlinear optical responses. Chapter seven deals with non-linear optical properties of weak donor-acceptor (DA) complexes formed between methyl substituted phenylenes (donor) and Chloranil or DDQ (acceptors). We have calculated the ground and the low-lying excited states of these DA complexes using INDO-SDCI method. The first… Advisors/Committee Members: Ramasesha, S (advisor).

Subjects/Keywords: Molecules - Electronic Properties; Theoretical Chemistry; Conjugated Molecules - Electronic Structure; Organic Conjugated Molecules; Electroluminescence; Polyfluorene Films; Dendrimers; Donor-Acceptor (DA) Complexes; Conjugated Molecules; Donor-Acceptor Molecule; Theoretical Chemistry

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mukhopadhyay, S. (2011). Theoretical Studies Of Electronic Properties And Electronic Processes In Conjugated Molecules. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/1265

Chicago Manual of Style (16^th Edition):

Mukhopadhyay, Sukrit. “Theoretical Studies Of Electronic Properties And Electronic Processes In Conjugated Molecules.” 2011. Doctoral Dissertation, Indian Institute of Science. Accessed March 06, 2021. http://etd.iisc.ac.in/handle/2005/1265.

MLA Handbook (7^th Edition):

Mukhopadhyay, Sukrit. “Theoretical Studies Of Electronic Properties And Electronic Processes In Conjugated Molecules.” 2011. Web. 06 Mar 2021.

Vancouver:

Mukhopadhyay S. Theoretical Studies Of Electronic Properties And Electronic Processes In Conjugated Molecules. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2011. [cited 2021 Mar 06]. Available from: http://etd.iisc.ac.in/handle/2005/1265.

Council of Science Editors:

Mukhopadhyay S. Theoretical Studies Of Electronic Properties And Electronic Processes In Conjugated Molecules. [Doctoral Dissertation]. Indian Institute of Science; 2011. Available from: http://etd.iisc.ac.in/handle/2005/1265

NSYSU

27. Hsieh, Chung-an. Investigation of organic solar cells utilizing carbazole-based donors.

Degree: Master, Electro-Optical Engineering, 2015, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-115240

► Emerging demands for solar energy continuously inspires the development of new materials and device structures. Organic solar cells, which offer the advantages of easy manufacturing,… (more)

Subjects/Keywords: electron-acceptor branched chain; organic molecules; electron-donor materials; solar cells; carbazole

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APA (6^th Edition):

Hsieh, C. (2015). Investigation of organic solar cells utilizing carbazole-based donors. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-115240

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hsieh, Chung-an. “Investigation of organic solar cells utilizing carbazole-based donors.” 2015. Thesis, NSYSU. Accessed March 06, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-115240.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hsieh, Chung-an. “Investigation of organic solar cells utilizing carbazole-based donors.” 2015. Web. 06 Mar 2021.

Vancouver:

Hsieh C. Investigation of organic solar cells utilizing carbazole-based donors. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Mar 06]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-115240.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hsieh C. Investigation of organic solar cells utilizing carbazole-based donors. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-115240

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Otago

28. van der Salm , Holly. Spectroscopy of Donor-Acceptor Compounds .

Degree: University of Otago

URL: http://hdl.handle.net/10523/5711

► A number of donor-acceptor compounds have been investigated using a range of spectroscopic and computational techniques. Donor-acceptor compounds are widely used in molecular electronics applications,… (more)

▼ A number of donor-acceptor compounds have been investigated using a range of spectroscopic and computational techniques. Donor-acceptor compounds are widely used in molecular electronics applications, and it is of interest to investigate how their properties can be manipulated and probed. Ground state properties are characterised with Fourier Transform (FT) - Raman spectroscopy, which is also used to verify density functional theory calculations. The initially formed excited state (Franck-Condon state) is characterised with electronic absorption and resonance Raman spectroscopy. Transient absorption spectroscopy tends to probe the longest-lived excited state, while time-resolved infrared spectroscopy can probe intermediate states and kinetic processes as the time between pump and probe is varied. Experimental techniques are complemented by the use of density functional theory (DFT) calculations. A series of complexes containing dimethyl or diphenyl amine- substituted dipyrido[3,2-a:2',3'-c]phenazine (dppz) in which the ancillary ligand at the metal centre was varied were studied. The properties of these ligands and complexes were found to be dominated by a strong intra-ligand charge transfer (ILCT) transition from the amine to dppz, with little contribution from typical low-energy metal-to-ligand charge transfer (MLCT) transitions for complexes. Protonation shifted this ILCT transition to the near-IR; this was characterised with resonance Raman spectroscopy and time-dependent DFT (TD-DFT) calculations. Based on this study, amine-substituted dppz systems were altered in various ways in order to manipulate this ILCT transition. The effect of changing the distance between the amine donor and the dppz acceptor was investigated; this was found to influence the energy of the ILCT transition, the relative intensity of vibrational modes associated with different parts of the molecule, and the excited state lifetime, but the ILCT character appeared to be retained. The effect of the angle between the donor and acceptor units for dppz was altered in various ways. Increasing the donor-acceptor angle was found to increase the energy and decrease the intensity of the ILCT transition, and increase the intensity of an MLCT transition for Re(I) complexes. Experimental and calculated non-resonant Raman cross sections also decreased as donor-acceptor angle was increased. The effect of changing the bridge type between donor and acceptor from conducting thiophene to more insulating triazole was investigated. This increased the energy of the lowest electronic transition, and reduced the degree of ILCT in this transition, with behaviour tending towards more typical dppz as the linker became more insulating. The properties of the ligand 5,6,11,12,17,18 - hexaazatrinaphthalene (HATN) substituted with electron-donating sulfur groups were investigated. The mono-, bi- and tri-Re(CO)3Cl complexes of this ligand showed broad and intense visible absorption, which TD-DFT calculations suggested involved mixed MLCT/ILCT transitions. Resonance… Advisors/Committee Members: Gordon, Keith (advisor).

Subjects/Keywords: Spectroscopy; Raman; DFT; dppz; donor acceptor

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

van der Salm , H. (n.d.). Spectroscopy of Donor-Acceptor Compounds . (Doctoral Dissertation). University of Otago. Retrieved from http://hdl.handle.net/10523/5711

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Chicago Manual of Style (16^th Edition):

van der Salm , Holly. “Spectroscopy of Donor-Acceptor Compounds .” Doctoral Dissertation, University of Otago. Accessed March 06, 2021. http://hdl.handle.net/10523/5711.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

MLA Handbook (7^th Edition):

van der Salm , Holly. “Spectroscopy of Donor-Acceptor Compounds .” Web. 06 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

van der Salm H. Spectroscopy of Donor-Acceptor Compounds . [Internet] [Doctoral dissertation]. University of Otago; [cited 2021 Mar 06]. Available from: http://hdl.handle.net/10523/5711.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Council of Science Editors:

van der Salm H. Spectroscopy of Donor-Acceptor Compounds . [Doctoral Dissertation]. University of Otago; Available from: http://hdl.handle.net/10523/5711

Note: this citation may be lacking information needed for this citation format:
No year of publication.

29. Busseau, Antoine. Synthèse et caractérisations de nouveaux penta(organo)[60]fullerènes pour la formation d’assemblages supramoléculaires : Synthesis and characterisations of new penta(organo)[60]fullerenes for supramolecular assemblies.

Degree: Docteur es, Chimie, 2017, Angers

URL: http://www.theses.fr/2017ANGE0033

►

La structure unique et les propriétés des fullerènes ont suscité l’intérêt des chercheurs, en particulier dans les domaines de l’électronique et de l’optoélectronique. Dans ce… (more)

▼

La structure unique et les propriétés des fullerènes ont suscité l’intérêt des chercheurs, en particulier dans les domaines de l’électronique et de l’optoélectronique. Dans ce contexte, plusieurs mono- et de poly-adduits du fullerène ont été décrits pour leurs développements comme nouveaux matériaux originaux et comme polymères supramoléculaires. Nous présentons ici les synthèses et les études de nouveaux polymères supramoléculaires donneur-accepteur à base de penta(organo)[60]fullerènes. La parfaite régiosélectivité de la réaction de pentafonctionnalisation sur le [60]fullerène permet de former une cavité conique formée de cinq fragments éthynylaryles. A cette structure, différentes unités électro et/ou photoactives (tétrathiafulvalène et porphyrine de zinc) ont été liés par des liaisons covalentes via cinq réactions de cycloaddition 1,3- dipolaire. Le composé hôte-invité avec ses propriétés donneur-accepteur permet la formation d’assemblages par des interactions supramoléculaires. Nous avons réalisé les synthèses des penta(organo)[60]fullerènes comme nouveaux matériaux donneur-accepteur et nous avons étudié les propriétés des assemblages supramoléculaires en solution et à l’état solide.

The unique structure and properties of fullerenes have attracted wide interest especially in electronic and optoelectronic fields. In this context, a variety of mono-and poly-fullerene adducts have been described for theirs interest in the development of new complex materials and supramolecular polymers. Here, we present the synthesis and studies of new donor-acceptor supramolecular polymers based on penta(organo)[60]fullerenes. The perfect regioselectivity of the [60]fullerene pentafunctionalization reaction has provided us a singular conical structure formed by five ethynylaryl fragments. To this structure different electro and/or photoactive fragments (tetrathiafulvalene or zinc-porphyrin) were covalently linked using five simultaneous 1,3-dipolar cycloaddition reactions. The formed host-cavity together with the donor-acceptor properties of these system allow their assembly by supramolecular interactions. We have realized the synthesis of these penta(organo)[60]fullerenes as new donor-acceptor materials and the studies of their remarkable supramolecular arrangement in solution and solid state.

Advisors/Committee Members: Legoupy, Stéphanie (thesis director), Hudhomme, Piétrick (thesis director).

Subjects/Keywords: Polymère supramoléculaire; Système donneur-Accepteur; Supramolecular polymer; Self-Assembly; Donor-Acceptor system; Porphyrin; 540

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Busseau, A. (2017). Synthèse et caractérisations de nouveaux penta(organo)[60]fullerènes pour la formation d’assemblages supramoléculaires : Synthesis and characterisations of new penta(organo)[60]fullerenes for supramolecular assemblies. (Doctoral Dissertation). Angers. Retrieved from http://www.theses.fr/2017ANGE0033

Chicago Manual of Style (16^th Edition):

Busseau, Antoine. “Synthèse et caractérisations de nouveaux penta(organo)[60]fullerènes pour la formation d’assemblages supramoléculaires : Synthesis and characterisations of new penta(organo)[60]fullerenes for supramolecular assemblies.” 2017. Doctoral Dissertation, Angers. Accessed March 06, 2021. http://www.theses.fr/2017ANGE0033.

MLA Handbook (7^th Edition):

Busseau, Antoine. “Synthèse et caractérisations de nouveaux penta(organo)[60]fullerènes pour la formation d’assemblages supramoléculaires : Synthesis and characterisations of new penta(organo)[60]fullerenes for supramolecular assemblies.” 2017. Web. 06 Mar 2021.

Vancouver:

Busseau A. Synthèse et caractérisations de nouveaux penta(organo)[60]fullerènes pour la formation d’assemblages supramoléculaires : Synthesis and characterisations of new penta(organo)[60]fullerenes for supramolecular assemblies. [Internet] [Doctoral dissertation]. Angers; 2017. [cited 2021 Mar 06]. Available from: http://www.theses.fr/2017ANGE0033.

Council of Science Editors:

Busseau A. Synthèse et caractérisations de nouveaux penta(organo)[60]fullerènes pour la formation d’assemblages supramoléculaires : Synthesis and characterisations of new penta(organo)[60]fullerenes for supramolecular assemblies. [Doctoral Dissertation]. Angers; 2017. Available from: http://www.theses.fr/2017ANGE0033

30. Sona, Narayanan; Rani, Joseph; Sreekumar, A. Design and Synthesis of Donor-Acceptor Low Band Gap Copolymers for Photoconductive and Non-linear Optical Applications.

Degree: 2015, Cochin University of Science and Technology

URL: http://dyuthi.cusat.ac.in/purl/5007

►

The main focus of the present study was to develop ideal low band gap D-A copolymers for photoconducting and non-linear optical applications. This chapter summarizes… (more)

Subjects/Keywords: Band-Gap Tailoring; Polymerization methods for D-A copolymers; Donor‐Acceptor Low Band Gap Copolymers

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sona, Narayanan; Rani, Joseph; Sreekumar, A. (2015). Design and Synthesis of Donor-Acceptor Low Band Gap Copolymers for Photoconductive and Non-linear Optical Applications. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/5007

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sona, Narayanan; Rani, Joseph; Sreekumar, A. “Design and Synthesis of Donor-Acceptor Low Band Gap Copolymers for Photoconductive and Non-linear Optical Applications.” 2015. Thesis, Cochin University of Science and Technology. Accessed March 06, 2021. http://dyuthi.cusat.ac.in/purl/5007.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sona, Narayanan; Rani, Joseph; Sreekumar, A. “Design and Synthesis of Donor-Acceptor Low Band Gap Copolymers for Photoconductive and Non-linear Optical Applications.” 2015. Web. 06 Mar 2021.

Vancouver:

Sona, Narayanan; Rani, Joseph; Sreekumar A. Design and Synthesis of Donor-Acceptor Low Band Gap Copolymers for Photoconductive and Non-linear Optical Applications. [Internet] [Thesis]. Cochin University of Science and Technology; 2015. [cited 2021 Mar 06]. Available from: http://dyuthi.cusat.ac.in/purl/5007.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sona, Narayanan; Rani, Joseph; Sreekumar A. Design and Synthesis of Donor-Acceptor Low Band Gap Copolymers for Photoconductive and Non-linear Optical Applications. [Thesis]. Cochin University of Science and Technology; 2015. Available from: http://dyuthi.cusat.ac.in/purl/5007

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations