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J Chromatogr A

Title:		System map for the ionic liquid stationary phase tri(tripropylphosphoniumhexanamido)triethylamine bis(trifluoromethylsulfonyl)imide for gas chromatography
Author(s):		Lenca N; Poole CF;
Address:		"Department of Chemistry, Wayne State University, Detroit, MI 48202, USA. Department of Chemistry, Wayne State University, Detroit, MI 48202, USA. Electronic address: cfp@chem.wayne.edu"
Journal Title:		J Chromatogr A
Year:		2017
Volume:		20170928
Issue:
Page Number:		210 - 214
DOI:		10.1016/j.chroma.2017.09.064
ISSN/ISBN:		1873-3778 (Electronic) 0021-9673 (Linking)
Abstract:		The solvation parameter model is used to construct a system map for the retention of volatile organic compounds on the ionic liquid stationary phase tri(tripropypphosphoniumhexanamido)triethylamine bis(trifluoromethylsulfonyl)imide (SLB-IL76) over the temperature range 80-240 degrees C. The SLB-IL76 stationary phase is moderately cohesive and strongly dipolar/polarizable and hydrogen-bond basic but only a weak hydrogen-bond acid. Electron lone pair interactions are weak and make only a minor contribution to the retention mechanism. The separation properties of SLB-IL76 highlight the difficulty of designing new stationary phases from ion structures as the presence of amide groups in the cation don't seem to contribute significantly to the hydrogen-bond acidity of SLB-IL76. The separation properties of SLB-IL76 are closest to the bis(polycyanopropyl)siloxane stationary phases with a high percentage of bis(cyanopropyl)siloxane monomer and could be used in method development when a stationary phase with similar gross retention characteristics but different selectivity is required
Keywords:		"Chromatography, Gas/*methods Ethylamines/chemistry Hot Temperature Hydrogen Bonding Imides/*chemistry Ionic Liquids/*chemistry Siloxanes/chemistry Gas chromatography Retention Selectivity Solvation parameter model Stationary phase characterization System;"
Notes:		"MedlineLenca, Nicole Poole, Colin F eng Netherlands 2017/10/11 J Chromatogr A. 2017 Nov 17; 1524:210-214. doi: 10.1016/j.chroma.2017.09.064. Epub 2017 Sep 28"