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You searched for +publisher:"Georgia Tech" +contributor:("Uwe Bunz"). Showing records 1 – 3 of 3 total matches.

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Georgia Tech

1. Englert, Brian Carl. Jacketed and Functionalized Poly(paraphenyleneethynylene)s: Nonaggregating Conjugated Polymers and Materials Functionalized Through Click-Chemistry.

Degree: PhD, Chemistry and Biochemistry, 2005, Georgia Tech

The synthesis and investigation of new types of poly(paraphenyleneethynylene)s, PPEs, is presented. PPEs which are Jacketed are there by shielded from electronic and plararization effects in the solid state. Other PPEs contain pendent groups which may functionalized before or after polymerization to afford two versitle routes to newly functionalized polymeric materials. Based on the PPE structure, metals may be introduced and these polymers may be used as precursors for other types of materials such as ceramics. Advisors/Committee Members: Uwe Bunz (Committee Chair), Anselm Griffin (Committee Member), David Collard (Committee Member), Joseph Perry (Committee Member), Laren Tolbert (Committee Member).

Subjects/Keywords: Poly(paraphenyleneethynylene)s

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

APA (6th Edition):

Englert, B. C. (2005). Jacketed and Functionalized Poly(paraphenyleneethynylene)s: Nonaggregating Conjugated Polymers and Materials Functionalized Through Click-Chemistry. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/7102

Chicago Manual of Style (16th Edition):

Englert, Brian Carl. “Jacketed and Functionalized Poly(paraphenyleneethynylene)s: Nonaggregating Conjugated Polymers and Materials Functionalized Through Click-Chemistry.” 2005. Doctoral Dissertation, Georgia Tech. Accessed March 08, 2021. http://hdl.handle.net/1853/7102.

MLA Handbook (7th Edition):

Englert, Brian Carl. “Jacketed and Functionalized Poly(paraphenyleneethynylene)s: Nonaggregating Conjugated Polymers and Materials Functionalized Through Click-Chemistry.” 2005. Web. 08 Mar 2021.

Vancouver:

Englert BC. Jacketed and Functionalized Poly(paraphenyleneethynylene)s: Nonaggregating Conjugated Polymers and Materials Functionalized Through Click-Chemistry. [Internet] [Doctoral dissertation]. Georgia Tech; 2005. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1853/7102.

Council of Science Editors:

Englert BC. Jacketed and Functionalized Poly(paraphenyleneethynylene)s: Nonaggregating Conjugated Polymers and Materials Functionalized Through Click-Chemistry. [Doctoral Dissertation]. Georgia Tech; 2005. Available from: http://hdl.handle.net/1853/7102


Georgia Tech

2. Roberson, Luke Bennett. Understanding organic thin film properties for microelectronic organic field-effect transistors and solar cells.

Degree: PhD, Chemistry and Biochemistry, 2005, Georgia Tech

The objective of this work is to understand how the thin film characteristics of p-type organic and polymer semiconductors affect their electronic properties in microelectronic applications. To achieve this goal, three main objectives were drawn out: (1) to create single-crystal organic field-effect transistors and measure the intrinsic charge carrier mobility, (2) to develop a platform for measuring and depositing polymer thin films for organic field-effect transistors, and (3) to deposit polythiophene thin films for inorganic-organic hybrid solar cells and determine how thin film properties effect device performance. Pentacene single-crystal field-effect transistors (OFETs) were successfully manufactured on crystals grown via horizontal vapor-phase reactors designed for simultaneous ultrapurification and crystal growth. These OFETs led to calculated pentacene field-effect mobility of 2.2 cm2/Vs. During the sublimation of pentacene at atmospheric pressure, a pentacene disporportionation reaction was observed whereby pentacene reacted with itself to form a peripentacene, a 2:1 cocrystal of pentacene:6,13-dihydropentacene and 6,13-dihydropentacene. This has led to the proposal of a possible mechanism for the observed disproportionation reaction similar to other polyaromatic hydrocarbons, which may be a precursor for explaining the formation of graphite. Several silicon-based and PET-based field-effect transistor platforms were developed for the measurement of mobility of materials in the thin film state. These platforms were critically examined against one another and the single-crystal devices in order to determine the optimal device design for highest possible mobility data, both theoretically based on silicon technology and commercially based on individual devices on flexible substrates. Novel FET device designs were constructed with a single gate per device on silicon and PET as well as the commonly used common-gate device. It was found that the deplanarization effects and poor gate insulator quality of the individual gate devices led to lower overall performance when compared to the common gate approach; however, good transistor behavior was observed with field modulation. Additionally, these thin films were implemented into inorganic-organic hybrid and purely organic solid-state photovoltaic cells. A correlation was drawn between the thin film properties of the device materials and the overall performance of the device. It was determined that each subsequent layer deposited on the device led to a planarization effect, and that the more pristine the individual layer, the better device performance. The hybrid cells performed at VOC = 0.8V and JSC = 55A/cm2. Advisors/Committee Members: Laren Tolbert (Committee Chair), Art Janata (Committee Member), David Collard (Committee Member), Marcus Weck (Committee Member), Mohan Srinivasarao (Committee Member), Uwe Bunz (Committee Member).

Subjects/Keywords: Transistors; Thin films; Solar cells; OFET; Organic semiconductors; Field-effect transistors; Thin film transistors; Solar cells

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

APA (6th Edition):

Roberson, L. B. (2005). Understanding organic thin film properties for microelectronic organic field-effect transistors and solar cells. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/7629

Chicago Manual of Style (16th Edition):

Roberson, Luke Bennett. “Understanding organic thin film properties for microelectronic organic field-effect transistors and solar cells.” 2005. Doctoral Dissertation, Georgia Tech. Accessed March 08, 2021. http://hdl.handle.net/1853/7629.

MLA Handbook (7th Edition):

Roberson, Luke Bennett. “Understanding organic thin film properties for microelectronic organic field-effect transistors and solar cells.” 2005. Web. 08 Mar 2021.

Vancouver:

Roberson LB. Understanding organic thin film properties for microelectronic organic field-effect transistors and solar cells. [Internet] [Doctoral dissertation]. Georgia Tech; 2005. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1853/7629.

Council of Science Editors:

Roberson LB. Understanding organic thin film properties for microelectronic organic field-effect transistors and solar cells. [Doctoral Dissertation]. Georgia Tech; 2005. Available from: http://hdl.handle.net/1853/7629


Georgia Tech

3. Shotwell, Sandra Leigh. Synthesis and Characterization of ortho-Phenyleneethynylenes and Diphenylamine Polymers.

Degree: PhD, Chemistry and Biochemistry, 2006, Georgia Tech

In the first part of this thesis, the synthesis, characterization and investigation of ortho-phenyleneethynylenes containing heterocycles, are presented. These compounds display changes in absorption and emission spectra varying with their functionalization and size. These compounds also have the ability to coordinate with metals. The synthesis of coordination compounds and their crystallographic data are reported. The synthesis and characterization of tetraethynyl thiophene compounds containing pyridines are also presented. These compounds exhibit differences in absorption and emission spectra upon exposure to various metal salts. The final topic to be discussed is the synthesis and characterization of diphenyl amine polymers. These polymers could in principle be used in NLO applications or light emitting devices. Advisors/Committee Members: Dr. Uwe Bunz (Committee Chair), Dr. Anselm Griffin (Committee Member), Dr. David Collard (Committee Member), Dr. Joseph Perry (Committee Member), Dr. Laren Tolbert (Committee Member).

Subjects/Keywords: Polymers; Thiophenes Synthesis; Pyridinium compounds Synthesis; Ligands; Diphenylamine Synthesis; Oligomers

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

APA (6th Edition):

Shotwell, S. L. (2006). Synthesis and Characterization of ortho-Phenyleneethynylenes and Diphenylamine Polymers. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/10449

Chicago Manual of Style (16th Edition):

Shotwell, Sandra Leigh. “Synthesis and Characterization of ortho-Phenyleneethynylenes and Diphenylamine Polymers.” 2006. Doctoral Dissertation, Georgia Tech. Accessed March 08, 2021. http://hdl.handle.net/1853/10449.

MLA Handbook (7th Edition):

Shotwell, Sandra Leigh. “Synthesis and Characterization of ortho-Phenyleneethynylenes and Diphenylamine Polymers.” 2006. Web. 08 Mar 2021.

Vancouver:

Shotwell SL. Synthesis and Characterization of ortho-Phenyleneethynylenes and Diphenylamine Polymers. [Internet] [Doctoral dissertation]. Georgia Tech; 2006. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1853/10449.

Council of Science Editors:

Shotwell SL. Synthesis and Characterization of ortho-Phenyleneethynylenes and Diphenylamine Polymers. [Doctoral Dissertation]. Georgia Tech; 2006. Available from: http://hdl.handle.net/1853/10449

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