高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (1): 184.

• 研究论文 • 上一篇    下一篇

光敏自组装多层膜用于向列型液晶光控取向的研究

彭增辉, 于涛, 阮圣平, 宣丽   

  1. 中国科学院长春光学精密机械与物理研究所, 激发态物理重点实验室, 长春 130033
  • 收稿日期:2003-10-31 出版日期:2005-01-10 发布日期:2005-01-10
  • 通讯作者: 宣　丽(1957年出生),女,研究员,博士生导师.主要从事液晶器件物理与材料方面研究.E-mail:xuanli@ciomp.ac.cn E-mail:xuanli@ciomp.ac.cn
  • 基金资助:

    国家自然科学基金(批准号:19974046,59973020,60277033,50473040);吉林省科委基金(批准号:20020603)资助.

Self-assembled Multilayers Films of Photopolymerizable Amphiphile Used as Nematic Liquid Crystals Photoalignment Layer

PENG Zeng-Hui, YU Tao, RUAN Sheng-Ping, XUAN Li   

  1. Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • Received:2003-10-31 Online:2005-01-10 Published:2005-01-10

PDF (PC)

被引次数

9

摘要： 合成了含有光敏基团、双端为季铵阳离子的有机铵盐.将这种季铵盐与聚乙烯基苯磺酸钠用LBL(Layer-by-layer)方法组装成多层分子沉积膜,紫外光谱证明,这个过程为逐层、均匀沉积过程.在偏振紫外光照射下,多层膜中和光矢量方向匹配的光敏基团发生[2+2]环加成反应,形成表面张力各向异性膜.用该薄膜作向列相液晶的取向膜制成反平行液晶器件,在偏光显微镜下观察,发现取得均一、稳定的取向效果.

关键词: 自组装膜, Layer-by-layer(LBL), 液晶, 光控取向, 偏振紫外光

Abstract: A cationic bolaform amphiphile which had two double-bonds and could be polymerized by ultraviolet was synthesized. A layer-by-layer self-assembled film was prepared in aqueous solution by using this material and poly(sodium 4-styrenesulfonate). The UV-Vis spectra proved that the multilayers film was uniform. When polarized UV irradiated the film, the photosensitive double bond could be polymerized via [2+2] cycloaddition, and the production of reaction distributed along the polarized direction of incident UV. So that by this method an anisotropic film was prepared, we used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stable alignment result.

Key words: Self-assembled film, Layer-by-layer(LBL), Liquid crystals, Photoalignment, Polarized ultraviolet

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