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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., 2015, 15 (3), 103—108.
DOI: 10.18083/LCAppl.2015.3.103 |
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Effect of Azo Dyes Molecules Dimerization on Properties of LC – Dye Systems Under Laser Irradiation
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N. N. Barabanova1, V. V. Belyaev1, D. L. Bogdanov1, A. L.Bugrimov1, A. K. Dadivanyan1,
A. P. Nazarov1, V. G. Chigrinov2
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Author affiliations
1Moscow State Regional University,
10а Radio St., Moscow, 105005, Russia
E-mail: dadivank@mail.ru
2Hong Kong University of Science and Technology,
Clear Water Bay, Kowloon, Hong Kong, China
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Abstract
Dimerization of azo dyes molecules used for photoorientation of liquid crystals is considered. The values of thermodynamic potentials of this process are found. A probability of the formation of dye molecules dimers is evaluated. The effect of dimerization on polar and azimuthal anchoring energy of LC – azo dye system is shown. The bonds conjugation transfer via intermolecular hydrogen bond is revealed and the anisotropy of polarizability of the hydrogen bond is evaluated.
Keywords: dyes, liquid crystals, dimerization, anchoring energy, hydrogen bond, anisotropy of polarizability
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