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The mesomorphous, sorption, and selective properties of a binary sorbent based on achiral liquid crystal 4 methoxy 4' ethoxyazoxybenzene and macrocyclic heptakis(2,3,6 tri O acetyl) β cyclodextrin (10.25 wt %) are investigated. Macrocyclic additive was found to induce the formation of a helically twisted nematic phase (N*). The standard and excess thermodynamic functions of sorption by binary sorbent from gaseous phase are determined for 29 organic compounds (n alkanes, cycloalkanes, arenes, monoatomic alco hols, heterocycles, optical isomers of camphene, limonene, and butanediol 2,3). The investigated sorbent is found to have high structural selectivity over the wide temperature range of the N* mesophase (α p/m = 1.11-1.06, 95-120°C) and moderately expressed enantioselectivity within the narrow region of transition from the solid crystalline state to the N* mesophase (α +/-= 1.024-1.088, 91-100°C).

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SORPTION THERMODYNAMICS OF NONMESOGENS IN THE «SUPRAMOLECULAR LIQUID CRYSTAL -β-CYCLODEXTRIN» SYSTEM AND ITS SELECTIVITY UNDER GAS CHROMATOGRAPHY CONDITIONS

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