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Liquid Crystals and their Application
Russian Journal Zhidkie kristally i ikh prakticheskoe ispol'zovanie Жидкие кристаллы и их практическое использование |
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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2008, 4, 43—53. |
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Sorbtion and Selectivity Properties Of Composite Liquid Crystal Sorbent Based on 4-N-Octyloxy-4'-Cyanobiphenyl in Conditions of Capillary Gas Chromatography
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L. A. Onuchak, A. I. Zhosan, Yu. I. Arutyunov, M. V. Koshlets
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Author affiliations
Samara State University
Department of general chemistry and chromatography
Samara, 443011, Akademika Pavlova Str., 1
E-mail: onuchak@ssu.samara.ru
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Abstract
Sorbtion and selective properties of a composite liquid crystal sorbent on the basis of achiral smectic-nematic 8 OCB, macrocyclic chiral β-cyclodextrin with methyl groups and nanoparticles of silica in conditions of distributive capillary gas chromatography are investigated. It is shown, that the investigated sorbent is universal isomerselective sorbent, dividing structural and optical isomeres in temperature mesophase areas (SA, N). Structural selectivity is caused by a liquid crystal matrix of a sorbent, whereas enantioselectivity caused by interaction of enantiomeres with macrocyclic additive.
Keywords: composite sorbent, liquid crystal, β-cyclodextrin, nanoparticles of silica, capillary gas chromatography, isomerselectivity, enantioselectivity
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