Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"spacer group"”.
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Oligomeric surfactants as novel type of amphiphiles : structure - property relationships and behaviour with additives
… via the hydrophilic ammonium chloride head groups by spacer groups (different in nature and length). Properties of these cationic surfactant oligomers in aqueous solution such as solubility, micellization and surface activity, micellar size and aggregation number were discussed with respect …
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Lanthanide complexes of phthalimide and phthalamate containing ligands: synthesis, photophysical properties and their potential applications
… designs using a fluorophore linked through a spacer group to a receptor(s), with a wide dynamic range, directional precision, target specificity, and molecular logic capability. Tb(IlI) and Eu(IIl) metal ions have natural luminescence lifetimes in the order of milliseconds. As a result they …
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Emulsion-Templated Porous Polymers as Support Materials for Covalent Enzyme Immobilization
… onto the polyHIPE material or via a hydrophilic spacer group, O,O’-bis(3-aminopropyl)polyethylene glycol. CAL was immobilized with a loading of between 5.4 and 7.5 wt. % per g of polyHIPE material.
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Synthesis and properties of potentially liquid crystalline phosphorus compounds
… crystalline behaviour is trigonal pyramidal. Group V elements exhibit such geometry. This thesis reports the synthesis of a number of novel phosphorus(IIl) molecules and an investigation into their possible liquid crystalline phase behaviour. Trigonal pyramidal phosphines together with the …
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The synthesis of new electro-optic polymers.
… esters of benzoic acid as mesogenic (pendant) groups. Specifically, the mesogenic group contained an oxy-aryl-carboxy-aryl-carboxy-alkyl structure separated from the acrylate carbon-carbon double bond by a spacer group, which had a carboxyethyl-carboxyhexyl structure. A synthetic route was …
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Self-Assembly and Gelation Behaviour of Pyridyl Urea Complexes
… propylene, butylene, phenylene and napthy- lene spacer groups were synthesised by the reaction of 3-isocyanato-pyridine, pre- pared in situ from nicotinoyl azide, with the appropriate diamine. Each ligand was crystallised and their structures were solved using X-ray crystallography. The urea …
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Studies in Naphthopyran chemistry
… the substitution at C-3 and in the length of the group separating the naphthopyran unit from the polymer backbone. Macromolecular weight and its distribution have been measured for all of the polymers by gel permeation chromatography. Increase in the length of the spacer group led to a higher …