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Proceedings Paper

Photoinduced alignment behavior of polymer liquid crystals containing azobenzene moieties in the side chain
Author(s): Osamu Tsutsumi; Yiliang Wu; Jun-ichi Mamiya; Tomiki Ikeda
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Paper Abstract

Photoinduced two-dimensional (2-D) and three-dimensional (3-D) alignment behavior of polymer liquid crystals (LCs) with azobenzene moieties was investigated. Two-dimensional alignment of the polymer LCs was brought about on irradiation with linearly polarized light. The effects of various factors on the phenomena were discussed in detail, and experimental conditions and structural parameters of the polymer LCs were optimized. It was found that the response could be enhanced by two methods: chemically tailoring the structure of the polymer LCs and physically modifying the alignment procedure. Three- dimensional alignment of the azobenzene moieties was achieved on irradiation with unpolarized light. It was revealed that the azobenzene moieties were aligned along the propagation direction of the incident light. Photochemically inert mesogens underwent reorientation together with azobenzene moieties in the 2-D as well as 3-D alignment process.

Paper Details

Date Published: 24 October 2000
PDF: 8 pages
Proc. SPIE 4107, Liquid Crystals IV, (24 October 2000); doi: 10.1117/12.405313
Show Author Affiliations
Osamu Tsutsumi, Tokyo Institute of Technology (Japan)
Yiliang Wu, Tokyo Institute of Technology (Japan)
Jun-ichi Mamiya, Tokyo Institute of Technology (Japan)
Tomiki Ikeda, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 4107:
Liquid Crystals IV
Iam-Choon Khoo, Editor(s)

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