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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., 2010, 4, 70—76.

Influence of Non-Mesomorphic Additives on Properties of Liquid Crystalline Materials. IV. Dielectric Anisotropy of LC – Imidazole System

E. V. Bobrickaya1, V. V. Alexandriyskiy1,2, I. V. Novikov1, V. A. Burmistrov1,2

Author affiliations
1Ivanovo State University of Chemistry and Technology Department of Higher Molecular Compounds Technology
153460 Ivanovo, Av. F. Engel’s, 7. 
2Institute of Solution Chemistry, Russian Academy of Sciences
153045 Ivanovo, Akademicheskaya Str., 1. 

The influence of imidazole and 2-methylimidazole on the dielectric properties of 4-(trans-4'-pentylcyclohexyl)benzonitrile (5PCH) and 4-pentyloxy-4'-cyanobiphenyl (5OCB) was studied. It is shown that addition of polar non-mesogens results in dielectric anisotropy increase. This effect was caused by rival influence of H-bonding LC-non-mesogen on the dipole-dipole association of liquid-crystalline solvent.

Keywords: liquid crystals, mixtures, non-mesomorphic additives, dielectric and orientational properties, anisotropy, association, H-bond

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