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Proceedings Paper

Molecular dynamics in azobenzene liquid crystal polymer films studied by transient grating technique
Author(s): Kenji Katayama; Tomomi Fujii; Shota Kuwahara; Kiyohide Takado; Tomiki Ikeda
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Paper Abstract

We studied the effect of the ratio between the monomer and cross-linker molecules in the azobenene included liquid crystal polymer films by using the heterodyne transient grating (HD-TG) technique, which is one of the time-resolved measurement techniques. Depending on the ratio, the magnitude of the refractive index change, its anisotropy, and the lifetime of the cis isomer of azobenzene, generated by a UV pulse irradiation. By increasing the cross-linker ratio, the refractive index change and its anisotropy was reduced, indicating less ability for the motion, while slower lifetime was observed by increasing the monomer ratio, indicating that the film is difficult to return the original shape by a visiblelight irradiation. The obtained dynamics was consistent with the functionality of the films.

Paper Details

Date Published: 7 October 2014
PDF: 5 pages
Proc. SPIE 9182, Liquid Crystals XVIII, 918209 (7 October 2014); doi: 10.1117/12.2059740
Show Author Affiliations
Kenji Katayama, Chuo Univ. (Japan)
Tomomi Fujii, Chuo Univ. (Japan)
Shota Kuwahara, Chuo Univ. (Japan)
Kiyohide Takado, Chuo Univ. (Japan)
Tomiki Ikeda, Chuo Univ. (Japan)

Published in SPIE Proceedings Vol. 9182:
Liquid Crystals XVIII
Iam Choon Khoo, Editor(s)

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