Ionic Liquids In Analytical Chemistry And Calix[4]arene Chemistry Of NOx Gases

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Title: Ionic Liquids In Analytical Chemistry And Calix[4]arene Chemistry Of NOx Gases
Author: Wanigasekara, Eranda Pathirana
Abstract: Application of ionic liquids (ILs ) in analytical chemistry can be numerous . The use of ILs in analytical techniques including gas chromatography (GC ) , electrospray ionization mass spectrometry (ESI -MS ) , capillary electrophoresis (CE ) , high performance liquid chromatography (HPLC ) , solid phase microextraction (SPME ) and spectroscopy have attracted great attention of scientific community in the past few decades . Many advancements in this field are due to the development of multiply charged , multifunctional ionic liquids .This dissertation mainly consists of two parts . The first part focuses on the use of new , structurally diverse , chemically robust ionic liquids for GC , SPME and ESI -MS applications . Within this section , highly thermally stable GC stationary phases with unique selectivities developed using ILs will be discussed . The design and synthesis of new , flexible linear tricationic ILs will also be discussed . The use of these flexible tricationic ILs as ion pairing reagents in ultra -high sensitive detection of dianionic species in the positive mode of ESI -MS will be presented . Finally , development of a new IL -based silica -bonded polymeric material for SPME -GC headspace and direct immersion analysis will be discussed . The second part of this dissertation focuses on the use of calix[4]arene -based supramolecular architectures for the complexation of NOx gases . These calix[4]arene -NO+ complexes which were prepared by reacting calix[4]arene derivatives with environmentally toxic nitrogen dioxide (NO₂ ) gas , were then simply reduced for cleaner generation of medicinally important nitric oxide (NO ) gas .
URI: http : / /hdl .handle .net /10106 /5515
Date: 2011-03-03

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Ionic Liquids In Analytical Chemistry And Calix[4]arene Chemistry Of NOx Gases. Available electronically from http : / /hdl .handle .net /10106 /5515 .

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