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1. ARAMBALLI JAYANTH, SAVYASACHI. Luminescent self-assembled supramolecular polymers and microspheres based on Benzene-1,3,5- tricarboxamide (BTA) derivatives.

Degree: School of Chemistry. Discipline of Chemistry, 2018, Trinity College Dublin

This thesis, entitled ?Luminescent Self-assembled Supramolecular Polymers and Microspheres Based on Benzene-1,3,5-tricarboxamide (BTA) Derivatives? describes the syntheses and characterisation of a new range of tripodal molecules containing terpyridine binding motif and their various supramolecular self-assembly formation. The thesis is divided into five chapters. Chapter 1, the introduction, provides an overview of functional supramolecular materials and the various potential mechanisms for their formation, through diverse supramolecular interactions. The relevant literature and recent advances in the self-assembly of tripodal systems in the formation of supramolecular polymers will be reviewed, with a particular focus on soft materials and systems exhibiting gelation. Recent examples of supramolecular gels from low-molecular weight gelators (LMWGs), as well as higher-ordered aggregates, and their various applications are also discussed. Additionally, this chapter provides an overview of the lanthanide metal ions; detailing the advantages of their interesting photophysical properties etc. The remainder of the chapter covers a short review of the most relevant examples of supramolecular materials contributed by the Gunnlaugsson group in recent times. Chapter 2 describes the design and synthesis of a family of tripodal ligands based on the benzene-1,3,5-tricarboxamide (BTA) core bearing chiral centres, incorporated using a range of amino acids and the terpyridine functionality at the periphery. The europium Eu(III)- directed self-assembly of a pair of enantiomers in solution at two different ligand concentrations are studied through spectroscopic titrations using techniques such as UV-visible absorption, fluorescence and phosphorescence spectroscopy. The titration data was then analysed using non-linear regression fitting (using SPECFIT?) to determine the speciation and relative stability (global stability constants, log?) for the formation of various self-assembled supramolecular structures at different concentration. The formation of 1:1, 2:1 and 3:1 (M:L) species formed at lower concentration (CL = 5 ? 10-6 M) and 1:1 and 3:2 (M:L) species formed at higher concentration (CL = 1 ? 10-6 M) was observed. Chapter 3 then focuses on the self-assembly properties of the synthesised BTA molecules described in Chapter 2 for the formation of gels and higher-ordered aggregates (such as microspheres). The analysis of the gels using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and rheology measurements are presented. The properties of the microspheres using various microscopic techniques such as SEM, TEM, Helium Ion Beam microscope (HIB), and focussed-ion beam (FIB) microscopy are discussed. Furthermore, the mechanism of the formation of the microspheres and formation of interesting morphologies formed upon addition of Ln(III) (Ln = Eu(III) and Tb(III)) salts to the solution of microspheres are presented. The chapter concludes with the investigation of the mechanical strength using atomic force… Advisors/Committee Members: Gunnlaugsson, Thorfinnu.

Subjects/Keywords: Self-Assembly; Lanthanide Luminescence; Soft materials; Supramolecular gels; Microspheres; Electron Microscopy and Confocal Microscopy.

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APA (6th Edition):

ARAMBALLI JAYANTH, S. (2018). Luminescent self-assembled supramolecular polymers and microspheres based on Benzene-1,3,5- tricarboxamide (BTA) derivatives. (Thesis). Trinity College Dublin. Retrieved from http://hdl.handle.net/2262/82323

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

Chicago Manual of Style (16th Edition):

ARAMBALLI JAYANTH, SAVYASACHI. “Luminescent self-assembled supramolecular polymers and microspheres based on Benzene-1,3,5- tricarboxamide (BTA) derivatives.” 2018. Thesis, Trinity College Dublin. Accessed May 22, 2018. http://hdl.handle.net/2262/82323.

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

MLA Handbook (7th Edition):

ARAMBALLI JAYANTH, SAVYASACHI. “Luminescent self-assembled supramolecular polymers and microspheres based on Benzene-1,3,5- tricarboxamide (BTA) derivatives.” 2018. Web. 22 May 2018.

Vancouver:

ARAMBALLI JAYANTH S. Luminescent self-assembled supramolecular polymers and microspheres based on Benzene-1,3,5- tricarboxamide (BTA) derivatives. [Internet] [Thesis]. Trinity College Dublin; 2018. [cited 2018 May 22]. Available from: http://hdl.handle.net/2262/82323.

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

Council of Science Editors:

ARAMBALLI JAYANTH S. Luminescent self-assembled supramolecular polymers and microspheres based on Benzene-1,3,5- tricarboxamide (BTA) derivatives. [Thesis]. Trinity College Dublin; 2018. Available from: http://hdl.handle.net/2262/82323

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

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