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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., 2008, 2, 72—77. |
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Influence of Non-Mesomorphic Additives on the Properties of Liquid Crystalline Materials. I. Mixtures of Cyanosubstituted Mesogens with P-Nitroaniline and Azobenzene
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E. V. Alexandriyskaya1, I. V. Novikov1, V. V. Alexandriyskiy1,2, V. A. Burmistrov1,2
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Author affiliations
1Ivanovo State University of Chemistry and 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 aromatic non-mesogenic addidives: p-nitroaniline and azobenzene on the mesomorphic, optical, dielectric and orientational properties of 4-(trans-4'-pentylcyclohexyl)benzonitrile and 4-hexyloxy-4'-cyanobiphenyl was studied.
It was shown that addition of polar p-nitroaniline results in dielectric anizotropy rise. A more effective arrangement of p-nitroaniline in liquid crystal matrices is caused by mesogen–non-mesogen H-complex formation.
Keywords: optical, dielectric and orientational properties, anisotropy, aromatic non-mesogenic addidives, azobenzene, liquid crystals
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