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Photo-optical liquid crystal cells driven by molecular rotors (1993)

Ichimura, Kunihiro ; Hayashi, Yuko ; Akiyama, Haruhisa ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 63 (1993), S. 449-451

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: Photochemical regulation of in-plane alignment of a nematic liquid crystal is presented. A quartz plate surface was modified with 4-hexyl-4'-hexyloxyazobenzene substituted with triethoxysilyl group through a spacer at the 2' position to introduce the side-on type azobenzene unit of the surface. A liquid crystal hybrid cell fabricated with the azo-modified plate was irradiated with linearly polarized visible light for the n-π* transition. This resulted in the in-plane reorientation of the liquid crystal molecules to afford homogeneous alignment. Discussion is made on the mechanism of the in-plane alignment regulation, and the concept of a molecular rotor is proposed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.110020

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