Browsing Chemistry (Theses and Dissertations) by Date of Publication
Now showing items 1-20 of 398
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The chemistry and photochemistry of Ru(II) bipyridyl carbonyl complexes incorporated in Nafion
(Trinity College (Dublin, Ireland). School of Chemistry, 1991)The chemical reactions of bis(bpy)carbonylruthenium complexes, catalysts for the water gas shift reaction, have been investigated under mild conditions in Nafion, an ionic polymer. Chemical and photochemical reactions ... -
The immobilisation of TiO2 in various heterogeneous hosts for the photocatalytic oxidation of cyanide
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)The main focus of this study lies in the preparation and characterisation of TiO2. The formation of a nanoparticulate semiconductor may offer interesting photophysical properties and have applications as a photocatalyst. ... -
Bioremediation of unresolved complex mixtures in marine oil spills : an analytical perspective
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)Unresolved complex mixture (UCM) is the fraction of some petroleums that cannot be resolved by conventional gas chromatography and is characteristic of biodegraded petroleum oils and some refined products such as lubricating ... -
Mathematical modelling of diffusion in physico-chemical systems
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)The purpose of this thesis was to investigate the usefulness of mathematical modelling as an aid to understanding the physico chemical processes of iontophoresis in transdermal drug delivery and electrochemical sensor ... -
The synthesis of steroidal-based anion receptors and analysis of their binding properties
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)Chapter one is an introduction to molecular recognition and supramolecular chemistry; their origin and the history of their progress in recent years. It includes a brief account of the factors that must be considered when ... -
The synthesis and testing of inhibitors for the enzyme GTP-cyclohydrolase (I)
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)This thesis investigates the design and synthesis of compounds to be tested as inhibitors of the enzyme guanosine triphosphate cyclohydrolase (I), an enzyme which plays an important role in the biosynthesis of almost all ... -
Towards a comprehensive system for the recognition of double helical DNA : components for T and A
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)This thesis gives an account of the attempted synthesis of sequence selective double stranded DNA ligands. Two distinctive ligands types were envisaged, a pyrrolo[2', 3': 4, 5] thieno [2, 3-d]imidazole system (1.40 and ... -
Explorations in solvaton models of solvation within a quantum chemical framework
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)The purpose of this thesis is to investigate the potential of developing a tractable model for solvation of large systems within a quantum chemical framework. Candidate computational methods are reviewed ranging from ab ... -
Synthesis and reactions of new pyrimidines containing functionalised side chains
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)Thin layer chromatography was carried out using Merck Kiesgel 60 F254 0.2 mm silica gel plates. Visualisation was by means of ultra violet light at 254 nm or by development in potassium permanganate solution. Flash ... -
Anionic polymerisation photoinitiated by ruthenium polypyridyl complexes
(Trinity College (Dublin, Ireland). School of Chemistry, 2000)A new group of photoinitiators of ethylcyanoacrylate monomers based on ruthenium polypyridyl complexes has been investigated. The photoinitiators, of general formula [Ru(DMB)2(L)2]2+, where L = 4-picoline, 2-picoline, ... -
Synthesis of potential inhibitors of the protein A Tase
(Trinity College (Dublin, Ireland). School of Chemistry, 2001)Thin layer chromatography was carried out using Merck Kieselgel 60 F254 0.2 mm silica gel plates. Visualisation was by means of ultra-violet light at 254 nm. Flash column chromatography was carried out using Merck Kieselgel ... -
Computational studies of lithium complexes and alkanes
(Trinity College (Dublin, Ireland). School of Chemistry, 2001)This thesis studies via computation "non-standard" aspects of the chemistry of two different systems; lithium complexes and alkanes. Various approaches to modelling of these species is investigated: classical forcefield, ... -
Molecular simulations of poly(3-alkylthiophene)s : thermochromism and transport behaviour of dopants
(Trinity College (Dublin, Ireland). School of Chemistry, 2001)The solubility, processability, environmental stability and thermochromism of poly(3-alkylthiophenes) (P3ATs) in comparison with other π-conjugated conducting polymers make these materials attractive choices for both ... -
Preparation of uniform ZnO microparticles by hydrothermal methods; Conventional vs. microwave heating
(Trinity College (Dublin, Ireland). School of Chemistry, 2001)Uniform particles of ZnO and Zn(OH)2 have been prepared in the micron size range, using a number of hydrothermal methods. In a forced hydrolysis procedure, when aqueous zinc nitrate solutions are reacted with sodium ... -
Chiral hypernucleophilic acylation catalysts and synthesis of bipyridyls via palladium-catalysed reductive homocoupling of chloropyridines
(Trinity College (Dublin, Ireland). School of Chemistry, 2001)Chapter 1 of this thesis discusses the explosion of interest in the non-enzymatic kinetic resolution of secondary alcohols catalysed by chiral derivatives of the hypemucleophilic acylation catalyst, 4-dimethylaminopyridine. ... -
Enantioselective receptors for anionic species
(Trinity College (Dublin, Ireland). School of Chemistry, 2001)This project aimed to design, synthesise and test neutral, tripodal steroid receptors based on cholic acid 1 that were capable of binding to carboxylates (especially N-acyl-a-aminoacid carboxylates), and differentiating ... -
The adsorption of simple amines on platinum surfaces
(Trinity College (Dublin, Ireland). School of Chemistry, 2001)This thesis presents the results of an investigation of the adsorption of methylamine, dimethylamine, trimethylamine and ethylenediamine on Pt(111) and Pt(331). The chemical composition and geometric structure of the clean ... -
A study of anionic drug transport processes governing passive and enhanced transdermal delivery
(Trinity College (Dublin, Ireland). School of Chemistry, 2001)The research contained herein is directed at defining some of the factors which govern the passive and enhanced transdermal transport of anionic drugs and will extend current knowledge which largely pertains to the analogous ... -
Towards a comprehensive system for the recognition of double helical DNA : Components for base pair recognition in the major groove
(Trinity College (Dublin, Ireland). School of Chemistry, 2002)This thesis describes the attempted synthesis of sequence selective double-stranded DNA-binding ligands. It had been intended to provide a comprehensive DNA recognition system via two different tricyclic heterocyclic motifs. ... -
A study of Hydrogen-Deuterium exchange on the photophysical properties of Ruthenium (II) Polypyridyl complexes
(Trinity College (Dublin, Ireland). School of Chemistry, 2002)This main aim of the present study is to investigate the effect of protium-deuterium exchange on the photophysical and excited state energetics of Ru(ll) complexes by UV-Vis absorption, both steady-state and time-resolved ...