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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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Rus Eng


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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2018, 18 (4), 6—15.
DOI: 10.18083/LCAppl.2018.4.6

Isomer-Selective Properties of Carbon Adsorbent Modified by "4-n-octyloxy-4'-cyanobiphenyl – β-Cyclodextrin" under Gas-Adsorption Chromatography Conditions

K. A. Kopytin, E. S. Bykov, I. Yu. Sinkov, L. A. Onuchak

Author affiliations
Samara National Research University named after S. P. Korolev
1 Аk. Pavlov St., Samara, 443011, Russia

The isomer-selective properties of the carbon adsorbent Carbopack Y modified by successively applied immiscible monolayers of 4-n-octyloxy-4'-cyanobiphenyl mesogen and β-cyclodextrin have been studied. It has been shown that the bilayer modified adsorbent has a high selectivity to structural and optical isomers under the conditions of the gas-adsorption chromatography. Thermodynamic justification of the selectivity and its temperature dependence has been given. Compensation temperatures for the reversal of the isomer conversion from the chromatographic column have been calculated.

Keywords: adsorption, carbon adsorbents, modification, liquid crystal, cyclodextrin, bylayer, isomers, structure, optical properties, selectivity, gas-adsorption chromatography

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