Photochemical phase transition behavior of liquid crystals in the presence of nonmesogenic molecules

Jeong-Hee Sung; Osamu Tsutsumi; Akihiko Kanazawa; Takeshi Shiono; Tomiki Ikeda

doi:10.1117/12.449947

11 December 2001 Photochemical phase transition behavior of liquid crystals in the presence of nonmesogenic molecules

Jeong-Hee Sung, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda

Proceedings Volume 4463, Liquid Crystals V; (2001) https://doi.org/10.1117/12.449947
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

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.

Citation Download Citation

Jeong-Hee Sung, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, and Tomiki Ikeda "Photochemical phase transition behavior of liquid crystals in the presence of nonmesogenic molecules", Proc. SPIE 4463, Liquid Crystals V, (11 December 2001); https://doi.org/10.1117/12.449947

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