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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., 2009, 2, 39—44.

Influence of Non-Mesomorphic Additives on the Properties of Liquid Crystalline Materials. II. Mixtures of Cyanoderivatives Mesogens with 4-aminobenzonitrile

E. V. Bobritskya1, I. V. Novikov1, V. V. Alexandrijsky1,2, V. V. Volkov3, V. A. Burmistrov1,2

Author affiliations
1Ivanovo State University of Chemistry and Technology
153460 Ivanovo, Av. F. Engel’s, 7. 
2Institute of Solution Chemistry, RAS Russia 153045 Ivanovo, Akademicheskaya st., 1
3Ivanovo Institute of a State Fire-Prevention Service MES of Russia
Russia 153000 Ivanovo, Stroiteley Av., 33

The influence of 4-aminobenzonitrile (ABN) on the mesomorphic, optical, dielectric and orientational properties of 4-(trans-4'-pentylcyclohexyl)benzonitrile (5PCH) and 4-hexyloxy-4'-cyanobiphenyl (5OCB) was studied. It was shown that addition of (ABN) results in dielectric anisotropy increase. At the same time LC birefringence weakly depends on additive concentration. The increase in Kirkwood factor was shown which points out the decrease in dipole- dipole association due to H-bonding of LC-non-mesogen.

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

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