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- Title
Photosensitive Soft Matter: Mixtures of Nematic Liquid Crystal with Azo Molecules.
- Authors
Petrov, A. G.; Marinov, I. G.; Hadjichristov, G. B.; Sridevi, S.; Hiremath, U. S.; Yelamaggad, C. V.; Prasad, S. K.
- Abstract
Photosensitive soft matter based upon guest-host liquid crystal systems was prepared by mixing azobenzene-containing mesogens with the nematic liquid crystal 4-butyl-cyclohexane carboxylic acid 4-pentyloxy-phenyl ester (CM80). Binary mixtures of the host CM80 with three azo-bonded compounds as UV-active dopants (guests) at a relatively small concentration of 1 wt.% were characterized by thermo-optical, dielectric, spectral and flexoelectric measurements. The study aimed to determine the mechanisms that result in variations of material parameters caused by light-driven molecular conformation change of the azo-dye guest molecules (the transition from rod-shaped trans isomers to bent-shaped cis isomers).
- Subjects
AZOBENZENE; NEMATIC liquid crystals; MESOGENS; BINARY mixtures; FLEXOELECTRICITY; ISOMERS
- Publication
Bulgarian Journal of Physics, 2013, Vol 40, Issue 4, p294
- ISSN
1310-0157
- Publication type
Article