Photoalignment of Low-Molecular Liquid Crystals on Photo-Crosslinkable Copolymer Liquid Crystalline Film Comprising Photoreactive and Photoinactive Side Groups
作者:
Nobuhiro Kawatsuki,
Katsuya Matsuyoshi,
Tohei Yamamoto,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 2000)
卷期:
Volume 338,
issue 1
页码: 35-46
ISSN:1058-725X
年代: 2000
DOI:10.1080/10587250008024418
出版商: Taylor & Francis Group
关键词: Photoalignment;Polymer liquid crystals;Photoreactive polymer;Cinnamic acid;LCD
数据来源: Taylor
摘要:
We present photoalignment behaviors of low-molecular liquid crystals (LMLCs) on a photo-crosslinkable side-chain copolymer liquid crystal (CPLC) containing a 4-(2-cinnamoy-loxyethoxy)biphenyl group and a 4-cyanobiphenyl group by use of linearly polarized (LP) UV irradiation. The LMLC aligned homeotropically on the photoreacted film in the initial state of the photoreaction and the alignment direction changed homogeneously on further irradiation. The direction of the homogeneous alignment can be controlled to be parallel or perpendicular to the electric vector of the LP-UV light, by changing the irradiation temperature or the degree of the photoreaction. These alignment behaviors are explained by the interaction between the LMLCs and the photoreacted CPLC film.
点击下载:
PDF (451KB)
返 回