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Polymeric Ionic Liquids Derived from L -Valine for the Preparation of Highly Selective Silica-Supported Stationary Phases in Gas Chromatography

Authors
  • González-Rodríguez, Jorge1
  • Valls, Adriana
  • Arias Abrodo, Pilar1
  • Gutiérrez Álvarez, María Dolores1
  • González-Álvarez, Jaime1
  • Altava, Belén
  • Luis, Santiago V.
  • 1 (M.D.G.Á.)
Type
Published Article
Journal
Polymers
Publisher
MDPI AG
Publication Date
Oct 14, 2020
Volume
12
Issue
10
Identifiers
DOI: 10.3390/polym12102348
PMID: 33066384
PMCID: PMC7602222
Source
PubMed Central
Keywords
License
Green

Abstract

A series of silica-supported polymeric ionic liquid (PIL)-based stationary phases derived from a vinylic L -valine ionic liquid monomer and divinylbenzene (DVB) as the crosslinking agent have been prepared and studied as gas chromatographic stationary phases. These coated gas chromatographic columns exhibited good thermal stabilities (230–300 °C) and high efficiencies (1700–2700 plates/m), and were characterized using a linear solvation parameter model in order to understand the effects of the amount of DVB on the features of the resulting composite systems. Their retention behavior and separation efficiencies were demonstrated using the Grob test. By tuning the crosslinking degree for the IL-derived stationary phase, the separation selectivity and resolution of different compounds were improved. The different retention behaviors observed for many analytes indicate that these stationary phases may be applicable as new types of GC stationary phases.

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