Chemistry (Theses and Dissertations): Recent submissions
Now showing items 381-400 of 435
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Investigation of vertically stacked hybrid devices
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)Conductive carbon thin films are known to be promising candidates for future electrode materials for micro/nano-electronic device applications due to their favourable electrical properties and diversity of formation. In ... -
Functionalising and nitrogen-doping molecular graphenes : the chemical, optical and electronic consequences
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)Chapter 1: This chapter gives a comprehensive literature review to the field of graphitic materials with particular focus on polyaromatic hydrocarbons (PAHs). The latter section will focus on the key oxidative cyclodehydrogenation ... -
The chemistry of the Uranyl Moiety
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)Uranium has had a "Jekyll and Hyde" reputation for many years, stemming from its ability to both create clean and cheap energy and from its ability to create powerful and dangerous weapons. This Thesis examines the chemistry ... -
Synthetic routes towards guanidines of biological interest
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)The Rozas laboratory has been interested in the synthesis and biological evaluation of guanidine containing molecules for the past ten years. The application of guanidines as both minor groove binders (MGB) and a2-adrenoceptor ... -
Photodynamic therapy against oesophageal cancer : In vitro testing of potential new agents
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)Oesophageal malignancies are one of the leading causes of death in the Western World. The incidence of these diseases is currently on the rise alternative but powerful therapies are being developed against them, an example ... -
Synthesis and structural characterisation of metal-organic frameworks composed of transition or lanthanide metal cations linded via tritopic ligands
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)The work presented in this thesis is concerned with the design and synthesis of metal- organic frameworks (MOFs). MOFs are a class of hybrid inorganic-organic material composed of metal-ions or clusters of metal-ions linked ... -
Fiat Lux : the synthesis and manipulation of molecular scaffolds for photodynamic therapy and light-harvesting arrays
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)Molecular scaffolds are an emerging paradigm that offers chemists the use of preformed chemical structures that can be manipulated structurally and synthetically for use in a plethora of applications. The goal of the ... -
Teaching old dogs new tricks : transition metal-catalysed reactions for generation of rigid cubane and designer porphyrin scaffolds
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)The aim of this work was to use Pd-catalysis in the pursuit of novel, synthetically interesting, structural scaffolds based around either the rigid cubane framework or the optically active porphyrinoid core. In both cases, ... -
Ligand design for controlling dimensionality and chirality in novel lanthanide-organic hybrid materials with tuneable optoelectronic properties
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)The research presented in this thesis looks into the development of novel inorganic-organic hybrid materials with a particular focus on exploiting lanthanide(III) ions. The project considers the synthesis and structural ... -
Investigation into nanostructured carbon-based materials for electrochemical applications
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)Carbon materials, despite their ubiquitousness in nature and long studied properties, continue to be at the forefront of material research today. The last 20-30 years have seen renewed interest in structural allotropes ... -
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 ... -
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 ... -
The electromechanical properties of individual nanowires
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)The measurement of the mechanical and electrical properties of individual nanowires and nanowire systems is of paramount importance for their future incorporation into functional devices. An equally important property that ... -
Developing 1,10-phenanthroline complexes towards their application as triplet sensitizers
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)Summary - Chapter 1: This chapter begins with a general introduction to polycyclic aromatic hydrocarbons, followed by a focused review of recent 3,8-substituted 1,10-phenanthroline systems reported in the literature. The ... -
Conformational control of cofactors in nature : the influence of protein induced macrocycle distortion on the biological function of tetrapyrroles in photosynthesis
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)This thesis details new research into the influence of nonplanar distortions upon the function of porphyrin based cofactors in proteins via analysis of structural data deposited in the Protein Data Bank (PDB) combined with ... -
Studies on N-heterocyclic carbene-catalysed reactions
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)We have explored both the carbon-carbon bond forming and carbon-carbon bond breaking processes promoted by Ν-heterocyclic carbenes. It has been shown for the first time that triazolium ion based-precatalysts promote the ... -
N-Heterocyclic carbene-mediated reactions : controlling the fate of the Breslow Intermediate
(Trinity College (Dublin, Ireland). School of Chemistry, 2015)We have developed a highly efficient, broad scope, additive-free mild protocol for the oxidative carbene-catalysed esterification of aldehydes. We have unambiguously identified benzoin as the oxidised species in these ... -
Ultrasonic spray pyrolysis and electroless deposition for the synthesis of nanostructured metal / carbon microspheres
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)The objective of this work is to synthesis various nano-metallic carbon microsphere composite materials for environmental and catalytic applications. Ultrasonic spray pyrolysis and electroless deposition techniques were ... -
Synthesis of novel polyaromatic and heteropolyaromatic molecules
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)The aim of this work was to explore a number of different pathways for the synthesis of novel polyaromatic and heteroaromatic molecules. In particular, focus was directed towards the development of new preparative methods ... -
The development of novel methodologies for the selective Tischenko reaction and the use of acylpyrazoles as directing groups in organocatalytic 1,4-conjugate addition reactions
(Trinity College (Dublin, Ireland). School of Chemistry, 2014)Summary [end of chapter 1, page 59] Though significant advances in the field of organocatalytic Michael addition reactions have been achieved through the enantioselective additions of pronucleophiles to, in the main, ...
