Effect of Conformations of Trans- and Cis-Azobenzenes on Photoinduced Anchoring Transitions in a Nematic Liquid Crystal
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概要
- 論文の詳細を見る
Two azobenzenes with different positional substituents, 3, 3'-dihexyloxy-2, 2'-dimethylazobenzene(3, 3'-azo)and 4, 4'-dihezyloxy azobenzene(4, 4'-azo), were doped onto a nematic liquid crystal(LC)to form photoresponsive guest-host LC mixtures. The photoinduced anchoring transition of the LC, triggered by trans-cis photoisomerization of the two dyes subjected to linearly polarized UV light was found to be different. Whereas the photoisomerization of 3, 3'-azo only induced a transition from random planar(RP)to uniform planar(UP)(in-plane)alignment, that of 4, 4'-azo additionally induced a transition from uniform planar to homeotropic(H)(out-of-plane)alignment of the LC at a longer exposure time. The anchoring behavior of the two azobenzenes is discussed in terms of the conformation of their trans-and cis-isomers and the interactions of the isomers with the solid surface of the substrate.
- 社団法人応用物理学会の論文
- 2000-02-01
著者
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Ruslim Christian
Research Laboratory Of Resources Utilization Tokyo Insitute Of Technology
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Ichimura Kunihiro
Research Center For Materials With Integrated Properties Toho University
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Ichimura Kunihiro
Research Laboratory Of Resources Utilization Tokyo Insitute Of Technology
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Matsuzawa Yoko
Research Laboratory Of Resources Utilization Tokyo Insitute Of Technology
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Komitov Lachezar
Department Of Microelectronics And Nanoscience Chalmers University Of Technology
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