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Proceedings Paper

Photochemical phase transition behavior of liquid crystals in the presence of nonmesogenic molecules
Author(s): Jeong-Hee Sung; Osamu Tsutsumi; Akihiko Kanazawa; Takeshi Shiono; Tomiki Ikeda
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Paper Abstract

Photochemically induced nematic (N)-isotropic (I) phase transition behavior and domain formation of the azobenzene/liquid crystal (LC) mixtures in the presence of non-mesogenic dopants were evaluated. When a bent-shaped non-mesogenic molecule was added to the azobenzene LCs, formation of I domains was formed effectively on photoirradiation to cause the trans-cis isomerization of the azobenzene. The domain formation results from the aggregation of cis isomers, which could be enhanced to more extent with the aid of the bent-shaped dopant with a common structural feature to the cis-azobenzene. When the formation of the I domain proceeds quickly upon photoirradiation, the photochemical phase transition is induced more effectively.

Paper Details

Date Published: 11 December 2001
PDF: 8 pages
Proc. SPIE 4463, Liquid Crystals V, (11 December 2001); doi: 10.1117/12.449947
Show Author Affiliations
Jeong-Hee Sung, Tokyo Institute of Technology (Japan)
Osamu Tsutsumi, Tokyo Institute of Technology (Japan)
Akihiko Kanazawa, Yamagata Univ. (Japan)
Takeshi Shiono, Tokyo Institute of Technology (Japan)
Tomiki Ikeda, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 4463:
Liquid Crystals V
Iam-Choon Khoo, Editor(s)

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