Browsing Chemistry (Theses and Dissertations) by Title
Now showing items 223-242 of 398
-
The Optimisation of Silicas: Pre-treatment, Grafting & Potential Devices
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2021)Silica materials especially mesoporous silicas are prime candidates as materials which could help solve many issues currently existing such as rising CO2 levels as capture devices and rising levels of cancer worldwide ... -
Organocatalysed transformations of enolisable cyclic anhydrides
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2018)Herein is reported our attempts at the first formal cycloaddition reaction involving either glutaric anhydride derivatives or cyclic anhydrides including an endocyclic electron-withdrawing heteroatom with different ... -
Organocatalysis by halogen bonding donors: A promising complement to hydrogen bond-based catalysis.
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2023)Catalytic transformations, previously dominated by metal catalysts, have seen exponential growth in the use of organocatalysts over the last two decades. The emergence of small organic molecules employed to facilitate ... -
The Phase- and Shape-Controlled Synthesis of Metal Sulfide Nano- and Micromaterials
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2021)Chapter 1. Contains a literature review focusing on inorganic nano- and micromaterials with an emphasis on metal sulfides. The topics discussed include: the unique size and shape controlled properties of these materials, ... -
Photochromic molecular switches: Thienyl-based polyphenylenes and the π-delocalisation effect on photochemical properties
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2018)Information storage is at the forefront of materials science due to an exponential increase in demand for faster, more efficient, higher density data storage units. Light-driven photochromic switches form one of the most ... -
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 ... -
Photoluminescence properties of open and closed uranium compounds in non-aqueous media
(Trinity College (Dublin, Ireland). School of Chemistry, 2013)Luminescence spectroscopy has been successfully applied to elucidate the photophysical properties of a family of uranium halides and pseudohalides, in two oxidation states (U IV and U VI) in non-aqueous media. The first ... -
Photophysical and Biological Profiling of Ruthenium(II) Polypyridyl Complex-based Systems
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2019)Ruthenium(II) polypyridyl complexes have been shown to be promising compounds for the design of novel metal-based therapeutic and imaging agents due to their attractive and tuneable photochemical, photophysical and redox ... -
Photoresponsive Group 8 polyimines : functional components in self-assembled monolayers
(Trinity College (Dublin, Ireland). School of Chemistry, 2008)Chapter 1 describes the synthesis and characterisation of a series of mixed-ligand Ru(II) and Os(II) polypyridyl complexes; these consist of a tridentate, a bidentate and a monodentate ligand. The monodentate ligand is ... -
Plasmonic Nanoantennas for Photochemistry and Photocatalysis
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2021)Localised surface plasmon resonances (LSPRs) of sub-wavelength metallic nanoantennas can greatly improve light-matter interactions at the nanoscale beyond the optical diffraction limit and holds great promise for applications ... -
Porphyrin Atropisomerism - a New Twist in Molecular Recognition and Supramolecular Architectures
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2022)The unifying theme of the work reported in this thesis is the exploitation of the flexibility of the porphyrin macrocycle using sterically demanding units to construct supramolecular receptors for selective guest encapsulations. ... -
Post-Synthetic Treatment of Layered Nanomaterials for Optimized Performance in Energy Transfer & Storage Devices
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2021)Controlled syntheses of PbO and NiFe LDH layered nanomaterials were carried out for this work, followed by comprehensive studies to determine the extent to which improvements can be made, in terms of performance in their ... -
Potent Chelators with Intrinsic Intermolecular Affinity
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2019)This thesis, entitled 'Potent Chelators with Intrinsic Intermolecular Affinity', investigates the development of unsymmetrically substituted 6-carboxy-4-aryl-2,2'-bipyridine (bpy) scaffolds for incorporation into coordination ... -
Practical and enantioselective amino acid synthesis via novel catalytic ring opening processes
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2019)A novel methodology for the kinetic resolution (KR) of tetrachloroisopropoxycarbonyl (TCIC) substituted oxazinones via alcoholysis to afford enantioenriched and orthogonally protected β-amino acids has been developed. Upon ... -
Preparation and characterisation of porous silicon and porous silicon based composite materials
(Trinity College (Dublin, Ireland). School of Chemistry, 2006)The main aim of the thesis was to develop new advanced materials based on porous silicon. In chapters II and III, the fabrication of porous silicon by electrochemical etching using different aqueous and organic electrolytes ... -
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 ... -
PRINTED AND TEMPLATED 3D MXENE STRUCTURES FOR ENERGY STORAGE APPLICATIONS
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2023)Recently, MXenes have emerged as a promising family of materials for a variety of energy storage devices, with much of the work surrounding supercapacitors based on Ti3C2Tx. Nanosheets of this material combine a metallically ... -
ps-TRIR investigations of DNA systems and toward bimodal nanoparticles for biomedical applications
(Trinity College (Dublin, Ireland). School of Chemistry, 2009)The work described herein encompasses two distinct areas of chemistry. The first of these involved the time resolved study of ultrafast relaxation processes in DNA following UV excitation (chapters 1-5). The nature of the ... -
Pulse injection metalorganic chemical vapour deposition of selected magnetic metal oxides
(Trinity College (Dublin, Ireland). School of Chemistry, 2009)The main aim of this project is to prepare oxide based DMS and ferrimagnetic oxide layers for potential application in new generation spintronic devices. This work involves the preparation of Co-doped ZnO, Cr-doped ln2O3 ... -
Pyridazine-derived systems-from novel complexes to functional molecular switches
(Trinity College (Dublin, Ireland). School of Chemistry, 2012)Chapter 1: The chapter begins with a general introduction to tetrazine-derived ligands, alongside the photophysical properties of metal complexes, particularly Ir III, Rh III and Re I species. The coordination chemistry ...