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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., 2008, 2, 72—77.

Influence of Non-Mesomorphic Additives on the Properties of Liquid Crystalline Materials. I. Mixtures of Cyanosubstituted Mesogens with P-Nitroaniline and Azobenzene

E. V. Alexandriyskaya1, I. V. Novikov1, V. V. Alexandriyskiy1,2, V. A. Burmistrov1,2

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

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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