Browsing Chemistry (Theses and Dissertations) by Title
Now showing items 5-24 of 397
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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 ... -
A study of nanowire junctions and their impact on the properties of nanowire networks
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)Nanowire networks are of immense technological interest due to their properties of high transparency, high porosity, flexibility, ease of fabrication, and low cost. Despite the increasing attention these materials continue ... -
A study on novel pyrazine-substituted dithiolene complexes as synthetic models for molybdenum cofactor and facile molybdenum mediated unexpected formation of pentathiepins
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)In the present study, pyrazine (3 and 12) and quinoxaline (4 and 9-11) based compounds were synthesised as precursors for the synthetic analogues of MPT in MoCo. During the attempts to synthesise target model complexes, ... -
A synthetic and photophysical study of ruthenium polypyridyl enantiomers binding to DNA
(Trinity College (Dublin, Ireland). School of Chemistry, 2012)The luminescent ONA probe [Ru(phen)2dppz]2+, ruthenium (bis-1,10-phenanthroline dipyrido[3,2-a:2',3'-c]phenazine, was the first tris-bidentate ruthenium complex to be shown unequivocally to intercalate to DNA, which it ... -
A synthetic development of tetrazines as ligands in Group 8 coordination complexes
(Trinity College (Dublin, Ireland). School of Chemistry, 2009)Chapter 1 describes the synthesis and characterization of a number of novel pyridazinecentred ligands prepared from substituted tetrazines. The use of these compounds as precursors for planar nitrogen containing graphite-type ... -
Activation of MnIIMnIII-Peroxides with Relevance to the Catalytic Cycle of Ib RNRs
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2023)The understanding of the catalytic cycle of Ib ribonucleotide reductases (RNRs) has been hindered by the inability to trap the species formed following reaction of superoxide (O2-) and the MnII2 active site. This unknown ... -
Acylative cleavage of some cyclic ethers and study of a novel potassium complex
(Trinity College (Dublin, Ireland). School of Chemistry, 2003)Chapter 1 describes ring-opening reactions of cyclic ethers that are described in the literature. The extensive work carried out on tetrahydrofuran is discussed, but it is noted that reactions involving 2,5-dihydrofuran ... -
The Advanced Electron Microscopy Characterisation of Oxide Materials at the Atomic Level for Energy Storage and Conversion Technologies
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2023)At the forefront of the challenges faced by modern-day society is the growing demand for clean and renewable energy sources. This challenge has been met by a surge in research activities on the development of electrochemical ... -
Advances in the formal cycloadddition reaction between enolisable anhydrides and electrophiles
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2018)Expansion of the scope of catalytic cycloaddition reactions involving enolisable anhydrides to various Michael acceptors as electrophiles has been investigated. The reaction between homophthalic anhydrides and α-β; unsaturated ... -
An electrochemical study of electroactive, ferrocene-terminated, self-assembled monolayers
(Trinity College (Dublin, Ireland). School of Chemistry, 2008)Nanoscience includes the study of objects and systems in which at least one dimension is 1-100 nm. At these sizes, nanosystems can exhibit interesting and useful physical behaviours based on quantum phenomena. An area of ... -
An introduction to surface energy driven growth nanoparticle synthesis and the development of single TiO₂ nanowire devices as memristors
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)In this thesis aspects of a novel nanoparticle synthesis method and a unique multi-level resistance switching memory device are introduced. The dichotomy of the two programmes is addressed and a rationale for the transition ... -
An investigation into the catalytic versatility of low toxicity azolium ions
(Trinity College (Dublin, Ireland). School of Chemistry, 2013)A somewhat unexpected observation made by our group that appropriately substituted pyridinium ions were capable of acting as Bronsted acid catalysts in the presence of protic additives (i.e. methanol) caught our attention. ... -
An investigation of the resistive switching in individual and networks of nickel nanowires
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)Nickel/nickel oxide core-shell nanowires can be transformed from their native electrically insulating state to a conductive state by the formation of an atomic scale conductive filament bridging the oxide. This resistive ... -
An ultrafast IR study of cytosine-rich nucleic acids and a photophysical study of porphyrin-nucleic acid systems
(Trinity College (Dublin, Ireland). School of Chemistry, 2011)Work is presented in this thesis on two separate but complementary topics in the photochemistry of nucleic acids. Part one addresses the effect of direct UV excitation on the cytosine derivatives. Cytosine can form mutagenic ... -
Anion templated self-assembly - From anion complexes to the formation of supramolecular 2D networks
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2019)This thesis, entitled “Anion Templated Self-Assembly – From Anion Complexes to the Formation of Supramolecular 2D Networks” covers the anion complexation and ATSA abilities of different sets of ligands. The work will be ... -
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, ... -
Antimicrobial formulation and functionalization of photosensitizers for antimicrobial photodynamic therapy (aPDT)
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2022)To provide a long-lasting solution to infections affecting the current world scenario, antimicrobial photodynamic therapy (aPDT) offers a non-invasive means to destroy pathogenic microbes via formation of reactive oxygen ... -
Application of colloidal quantum dots to a range of photovoltaic designs
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)This project explores the use of quantumly confined materials as photon absorbers, with the aim to produce nanomaterials that we believe will increase efficiency in reported quantum dot based photovoltaic designs. The ... -
Aspects of supramolecular chemistry : molecular helicates and coordination polymers
(Trinity College (Dublin, Ireland). School of Chemistry, 2003)The research presented in this thesis lies within the general area of supramolecular and coordination chemistry. There are two facets to the work presented herein. Firstly, the syntheses and characterisation of novel ... -
Assembly, disassembly and reassembly: New synthetic approaches towards hybrid, mixed-metal and framework materials
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2018)The research presented in this thesis focuses on the synthesis of novel examples of advanced materials. The project aimed to synthesise new examples of three particular classes of materials; namely organic-inorganic hybrid ...