Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486364
Title: The synthesis and purification of Chiral Amino Acid Ionic Liquids and Investigation of Quantitative Solvent-Solute Interactions
Author: Kim, Hannah
Awarding Body: Imperial College London (University of London)
Current Institution: Imperial College London
Date of Award: 2007
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Abstract:
This project divides into two halves: the synthesis, purification and characterisation of numerous ionic liquids including amino acid based chiral ionic liquids and polarity studies, which have been undertaken to further the understanding and quantification ofthe solvent-solute interactions by use of Kalmet-Taft measurements. In the early 1980s, the introduction of cleaner technologies to eliminate or significantly reduce hazardous waste generation became a major concern. In particular, a high priority to find alternatives to volatile organic compounds (VOC's), which were found to be very damaging solvents, was realised. Ionic liquids (IL's) remained a curiosity until recently, when the chemists discovered that it was possible to replace the VOC's with IL's and in some cases, the reactions were much improved. Since then, the field of IL's has exploded, which led to a vast increase in the number of publications and in the number of groups throughout the world who have started to work in the field. This project has reviewed some of the synthesis, purification and characterisation of chiral amino acid ILs and improved upon these procedures. The second halfofthe project involved investigating the overall solvating ability some of these purified IL's to obtain a better understanding ofhow these solvents may affect a reaction. This ability is not dependant on one particular physical measurement of the solvent, but is rather a sum ofall the specific and non-specific interactions that might occur between a solvent and solute. A large number of interactions are involved; these could include columbic, directional, inductive, dispersion, hydrogen-bonding, and electron pair donor/acceptor forces. The polarity ofthe IL's and mixtures of ILs with water or dichloromethane were investigated using UV dyes.
Supervisor: Not available Sponsor: Not available
Qualification Name: Imperial College London, 2007 Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.486364  DOI: Not available
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