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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., 2010, 4, 70—76. |
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Influence of Non-Mesomorphic Additives on Properties of Liquid Crystalline Materials. IV. Dielectric Anisotropy of LC – Imidazole System
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E. V. Bobrickaya1, V. V. Alexandriyskiy1,2, I. V. Novikov1, V. A. Burmistrov1,2
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Author affiliations
1Ivanovo State University of Chemistry and Technology
Department of Higher Molecular Compounds Technology
153460 Ivanovo, Av. F. Engel’s, 7.
E-mail: NMR@isuct.ru
2Institute of Solution Chemistry, Russian Academy of Sciences
153045 Ivanovo, Akademicheskaya Str., 1.
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Abstract
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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