A thermodynamic approach to understanding liquid crystal selectivity in gas chromatography

Autor:	F. Ammar-Khodja, M. Rogalski, S. Guermouche, M. H. Guermouche, Ewa Rogalska, J. P. Bayle, Patrick Judeinstein
Rok vydání:	2003
Předmět:	Chemistry Organic Chemistry Clinical Biochemistry Xylene Cresol Biochemistry Analytical Chemistry chemistry.chemical_compound Azobenzene Liquid crystal medicine Structural isomer Physical chemistry Organic chemistry Gas chromatography Selectivity Dissolution medicine.drug
Zdroj:	Chromatographia. 57:249-253
ISSN:	1612-1112 0009-5893
Popis:	The thermodynamics of four new liquid crystals were investigated in order to understand their selectivity as stationary phases in gas chromatography. In this case study, liquid crystals with a benzoyloxy azobenzene mesogenic core substituted with heptyloxy (C7) and/or dioxyethylene ether (DOE) groups, were used. The chromatographic separations of linalool and citronellal, and of xylene, tetraethylbenzene and cresol isomers, which were achieved with the liquid crystal stationary phases, have been related to the dissolution thermodynamics of the solutes. The results gave us an insight into the mechanism of the molecular recognition involved in the separation processes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::34e34fc5cf094114dec3885f4019e273 https://doi.org/10.1007/bf02491724 Zobrazit plný text záznamu Full text from SpringerLink