Browsing Doctoral Degrees (Chemistry and Polymer Science) by Title
Now showing items 1-20 of 220
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A 195Pt Nuclear magnetic resonance and molecular dynamics computer simulation study of the solvation of simple platinum (IV) chlorido complex anions in water and water-miscible solvent mixtures
(2017-03)ENGLISH ABSTRACT: A combined 195Pt NMR spectroscopy and Molecular Dynamics (MD) computer simulation study of the solvation of the octahedral Pt(IV) complex [PtCl6]2‒ in binary mixtures of water and the fully water-miscible ... -
59Co NMR, a tool for the study of the structure, reactivity and supramolecular chemistry of Co(III) complexes derived from a series of N-alkyl-N-alkyl(aryl)-N’-acyl(aroyl)thioureas
(Stellenbosch : Stellenbosch University, 2020, 2020-03)ENGLISH ABSTRACT: A large library of Co(III) complexes, derived from selected monopodal and bipodal N,N- dialkyl-N’-acyl(aroyl)thioureas, have been synthesized and characterized. These ligands form tris(chelated) complexes ... -
Adamantane copolymers
(Stellenbosch : Stellenbosch University, 2001-12)ENGLISH ABSTRACT: This study concerns the incorporation of adamantane containing monomers 3-(1-adamantyl)-1-propene and 1-(1-adamantyl)-4-vinylbenzene into ethene, propene and higher a-olefins using different catalytic ... -
Advanced analytical methods for the analysis of complex polymers prepared by RAFT and RITP
(Stellenbosch : Stellenbosch University, 2015-04)ENGLISH ABSTRACT: Synthetic polymers are complex compounds that have multiple distributions with regard to molar mass, chemical composition, functionality and molecular architecture. Therefore, the molecular complexity ... -
Alternating hetero-arm copolymer molecular brushes as scaffolds for inorganic nano-wires
(Stellenbosch : Stellenbosch University, 2013-03)ENGLISH ABSTRACT: This study describes the synthesis and self-assembly of hetero-arm molecular brushes (hetero-arm MBs). These MBs consist of two polymeric side chains (SCs) of different natures, alternatingly distributed ... -
Amine end-functional poly(N-vinylpyrrolidone) as amMacroinitiator for L-lysine N-carboxyanhydride polymerization - towards the preparation of pH-responsive micelles for drug delivery
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Cancer is a notorious affliction that knows no age, gender, ethnic, racial, or species bounds and is responsible for over 14% of annual worldwide human deaths. There is no universal cure and the treatments ... -
Analysis of complex tannins by multidimensional techniques
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: Hydrolysable tannins are plant derived (poly)phenolics which for centuries have been used in tanning, the transformation of animal hides into leather. In addition to their industrial applications, ... -
Analysis of vegetable oils, seeds and beans by TGA and NMR spectroscopy
(Stellenbosch : University of Stellenbosch, 2011-03)ENGLISH ABSTRACT: Due to the commercial, nutritional and health value of vegetable oils, seeds and beans, the analysis of their components is of much interest. In this dissertation oil-containing food products, specifically ... -
Applicatins of liquid chromatography-tandem mass spectrometry to wine analysis : targeted analysis and compound identification
(Stellenbosch : Stellenbosch University, 2012-12)ENGLISH ABSTRACT: The wine industry is an important sector of agriculture and wine analysis forms the basis of assessing compliance of its commodities with regulatory standards and research in this field. Liquid ... -
Application of modern analytical techniques and chemometric methods to the chemical characterisation of South African wines : determination of non-volatiles
(Stellenbosch : Stellenbosch University, 2004-12)ENGLISH ABSTRACT: The present study deals in the first instance with the improvement of current analytical techniques for the analysis of the non-volatile content of wines. An improved sample preparation method, using ... -
Application of modern chromatographic technologies for the analysis of volatile compounds in South African wines
(2009-12)ENGLISH ABSTRACT: The present study was initiated by the wine industry of South Africa to overcome the lack of available information on the flavor and aroma of South African wines. The aim was to develop new analytical ... -
Applications of superparamagnetic nanoparticles for the separation and recovery of PGM metals from acidic wastewater solutions
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: South Africa is one of the leading countries in the production of precious metals (Au and PGMs). The refinery final stages for recovering precious metals makes use of two hydrometallurgical processes: ... -
Block and graft copolymers as flocculants for wastewater treatment
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Water pollution, due to toxic metals and organic compounds, remains a serious environmental problem. Many of the contaminants found in industrial and municipal wastewaters are known to be toxic or ... -
Carbene and coordination complexes of gold, palladium, platinum and manganese derived from N-containing heterocycles
(Stellenbosch : Stellenbosch University, 2001-12)ENGLISH ABSTRACT: Please refer to fulltext for abstract -
Carbene ligand and complex design directed towards application in synthesis and homogeneous catalysis
(Stellenbosch : Stellenbosch University, 2008-12)Alkylated acetonitrile that forms during the synthesis of the sulfonium salt, [(Me3)2(MeS)S][BF4], is involved in the formation of new , -unsaturated Fischer-type carbene complexes from (CO)5M=C(OMe)CH2Li (M = Cr, W). ... -
Cation-π induced association and nano-structured aggregate formation of water-soluble [PtII(diimine)(Ln-S,O)]+ complexes examined with high-resolution 1H and DOSY NMR : towards understanding their potential antimalarial activity
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: Please refer to full text for abstract -
Characterization of glycopolymers by asymmetric flow field-flow fractionation
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: An alternative route for studying the interactions between human serum albumin (HSA) and dendronized glycopolymers was implemented by applying a versatile asymmetric flow field-flow fractionation ... -
Chemical characterisation of the aroma of honeybush (Cyclopia) species
(Stellenbosch : University of Stellenbosch, 2010-12)ENGLISH ABSTRACT: Honeybush tea, also known as “South Africa’s sweetest tea”, is a herbal tea made from the leaves and twigs of Cyclopia spp., indigenous to the fynbos biome in the Western and Eastern Cape provinces of ... -
Chemical modification of polysaccharides with hydrophilic polymers for CaCO3 crystal growth modification and filler retention, for paper applications
(Stellenbosch : Stellenbosch University, 2008-12)Polysaccharides were modified with selected polymers via the grafting technique. Both anionic and cationic polysaccharides were prepared. Random and crosslinked graft copolymers were also prepared. The percentage grafting ... -
Chemical speciation of RhIII complexes in acidic, halide-rich media by means of 103Rh NMR spectroscopy : the importance of speciation in the selective separation and recovery of rhodium
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: In this thesis, the recovery of RhIII from both synthetically prepared and authentic industrial PGM-containing solutions was systematically investigated via organic precipitation methods using several ...
