Electro-optical properties and photopolarization anisotropy of methacrylic azopolymer films |
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Authors: | N A Davidenko O N Nadtoka V G Syromyatnikov S L Studzinskii L S Tonkopieva and A N Ankin |
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Institution: | (1) Taras Shevchenko Kiev National University, 60 ul. Vladimirskaya, Kiev, 01033, Ukraine |
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Abstract: | We have synthesized polymethacrylates with azobenzene side moieties and “spacers” of different lengths. We have studied the
spectra and kinetics of the electro-optical effect appearing in films of such azopolymers after they are exposed to linearly
polarized light. The nature of the electro-optical effect is explained by the appearance of photoinduced optical anisotropy
in the films, due to a change in the ratio of the concentrations of trans and cis isomers of the azobenzene moieties. The
characteristic time required for establishment and relaxation of photoinduced optical anisotropy correlates with the times
required for a change in the dielectric characteristics of the studied films when exposed to linearly polarized light.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 76, No. 2, pp. 307–310, March–April, 2009. |
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Keywords: | azo-containing polymers photoisomerization electro-optical effect photo-dielectric properties |
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