TiO2 nanotube arrays are promising candidates for applications such as photocatalysis and for potential employment in spin-electronic (spintronic) devices. The functionality of TiO2 -based nanotubes is highly dependent on their structure (microstructure and crystallographic symm…
"36" Result
Sort By:
Solid oxide fuel cells (SOFCs) are the promising energy technology to generate electricity from chemical fuel, with no discharge of pollutant. Much effort has been made to enhance the performance of it, while little knowledge regarding anodic reaction of SOFCs is available, stil…
Phytases catalyze the hydrolysis of inorganic phosphate from phytic acid (myo-inositol 1,2,3,4,5,6-hexakis dihydrogen phosphate) and are able to improve the nutritional quality of phytate-rich diets. Escherichia coli phytase, a member of the histidine acid phosphatase family has…
Arenes are a cornerstone of organic chemistry, and new methods for their functionalisation, whether with improved efficiency, or for the synthesis of novel, highly functionalised skeletons remain crucial. The methods available for achieving such transformations are diverse. This…
This thesis describes the development of gold, rhodium and palladium complexes incorporating a series of fluorinated N-heterocyclic carbene (NHC) ligands (NHC = 1,3-bis(fluorophenyl)imidazol-2-ylidene, fluorophenyl = 4-fluorophenyl (NHC-1), 2,4-difluorophenyl (NHC-2), 2,6-difluo…
Lewis acids are widely used in the pharmaceutical industry, generally homogeneously, to perform reactions such as C-C or C=N bond formation and acetalisation. Typically, metal salts such as those of Ti, Fe and especially Sc are used, the last typically as the triflate. Metal org…
The following thesis outlines work carried out during the last three years for the development and investigation of methodologies using amides as N- and O- acylating agents. Chapter 1 highlights the range of methodologies and protocols reported in the literature that use amides …
Two methods of C-H functionalisation of sp2 C-H bonds via ruthenium catalysis have been developed in this thesis. The first methodology is the preparation of meta-sulfonated heteroaromatics. Individual substrate optimisations were performed on various nitrogen containing heteroa…
This thesis details investigations into the generation and synthetic utility of α,β-unsaturated acyl ammonium intermediates using isothioureas as Lewis base organocatalysts to generate a range of heterocyclic products. Initial investigations focussed on the development of a Mich…
Organosilica nanoparticles have attracted a lot of research interest in a variety of areas such as drug delivery and catalysis because of their properties which include high surface area as well as tunable particle and pore size. In particular, nanoparticles with large pore size…
The experimental data and results demonstrated here illustrate the preparation and application of mesoporous metal oxides in energy storage, adsorption, and catalysis. First, a new method of controlling the pore size and wall thickness of mesoporous silica was developed by contr…
Ionic liquid/scCO₂ biphasic systems have been studied as a possible solution to the main problems concerning homogeneous catalysis reactions such as, the product/catalyst separation, the catalyst retention in the reaction medium and the use of organic solvents. The hydroformylat…
The synthesis of ligands has been identified as the limitation for wider application of catalytic asymmetric synthesis. Indeed, synthesis of phosphorus-based ligands, has been often shown to be challenging and not always efficient. It has also been observed that subtle changes i…
A series of novel monodentate and bidentate phosphine ligands substituted with bulky tert-butyl and fluorinated aryl groups have been synthesised. Borane protection has proved to be an excellent method for easy synthesis and purification of bidentate ligands in some cases. Howev…
This work investigated the synthesis, characterisation and properties of known and novel scandium carboxylate Metal-organic Frameworks (MOFs). The first part reports the performance of these Sc-MOFs as Lewis acid catalysts. The porous MOF scandium trimesate MIL-100(Sc) and the s…
Different diphosphine ligands having the structure shown below have been studied for carbonylation and hydroformylation reactions. Depending on the substituent on the phosphorus atoms the electronic and steric properties can be tuned to direct the reaction towards the desired pr…
Long relegated to the background by the pre-eminence of magnesium-based, stoichiometric Grignard reagents, a distinct chemistry of the heavier alkaline earth metals, calcium, strontium and barium, is only now starting to emerge. As similarities have been drawn between the large,…