Polymeric imidazolium ionic liquids as valuable stationary phases in gas chromatography: Chemical synthesis and full characterization |
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Authors: | Jaime González-Álvarez Domingo Blanco-Gomis Pilar Arias-Abrodo Daniel Díaz-Llorente Nicolás Ríos-Lombardía Eduardo Busto Vicente Gotor-Fernández María Dolores Gutiérrez-Álvarez |
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Institution: | 1. Department of Physical and Analytical Chemistry, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain;2. Organic and Inorganic Chemistry Department, University of Oviedo, Julián Clavería 8, 33006 Oviedo, Spain |
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Abstract: | Seven new functionalized polymerizable ionic liquids were chemically prepared, and later applied for the preparation of polymeric stationary phases in gas chromatography. These coated GC columns, which exhibited good thermal stabilities (240–300 °C) and very high efficiencies (3120–4200 plates/m), have been characterized using the Abraham solvation parameter model. The chromatographic behavior of these polymeric IL columns has been deeply studied observing excellent selectivities in the separation of many organic substances such as alkanes, ketones, alcohols, amines or esters in mixtures of polar and non polar solvents or fragrances. Remarkably, the challenging separation of xylene isomers has been possible using a bis(trifluoromethylsulfonyl)amide based imidazolium IL coated column as a gas chromatography stationary phase. |
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Keywords: | Chemical synthesis Gas chromatography Polymeric ionic liquids Solvation parameter model Stationary phases |
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