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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., 2016, 16 (3), 87—92.
DOI: 10.18083/LCAppl.2016.3.87 |
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Selective Properties of Carbon Adsorbent Modified by Mixed Adsorption Layer of the "Liquid Crystals – β-Cyclodextrin" Modifier Under Gas Adsorption Chromatography Conditions
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E. S. Bykov, K. A. Kopytin, L. A. Onuchak
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Author affiliations
Samara National Research University,
1 аk. Pavlov St., Samara, 443011, Russia.
E-mail: void92@mail.ru
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Abstract
The article discusses selective properties of carbon adsorbent Carbopack Y (CpY) modified by the supramolecular polar nematic liquid crystal 4-(2-hydroxyethyloxy)-4'-cyanoazoxybenzene (HEOCAB) and the unsubstituted β-cyclodextrin (β-CD) under gas adsorption chromatography conditions. It was found that during modification the mixed adsorption layer "HEOCAB + β-CD" is formed on the carbon adsorbent surface. It was shown that the modified adsorbent has a moderate selectivity with respect to the xylene structural isomers and possesses high enantioselectivity towards polar enantiomers of butanediol.
Keywords: supramolecular liquid crystal, chiral macrocycles, selectivity, gas adsorption chromatography, host-guest complexes
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