一种新型光敏小分子用于光控取向的研究  

Photoalignment Film of Liquid Crystal Based on a Novel Photosensitive Monomer

作　　者：姚丽双[1] 彭增辉[1] 张伶莉[1] 吕凤珍[1] 宣丽[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室

出　　处：《液晶与显示》2007年第5期516-519,共4页Chinese Journal of Liquid Crystals and Displays

基　　金：国家自然科学基金(No.50473040;No.60578035);吉林省科技厅基金(No.20050520;No.20050321-2)资助项目

摘　　要：通过在3,5-二羟基苯甲醇分子中的双酚基基团上引入双肉桂酰酯光敏基团的酯化反应,合成了一类新型的分子顶部为羟基极性基团,整个分子构型类似于树枝状的光敏小分子化合物。将此种光敏材料配成一定浓度的溶液,旋涂在玻璃基板上成膜,经过线性偏振紫外光辐照后发生交联反应,制备成光控取向膜。以此种取向膜制成向列相液晶的平行液晶器件,在偏光显微镜下观察,发现取得了均一、稳定的取向效果,并且该取向膜具有良好的热稳定性能。A novel type benzyl alcohol and material this mat on glass linearly of photoalignment cinnamoyl chloride mate was rial based firstly rep is the nonlinear branch conformation and its on the esterification reaction of orted in this paper. The dis polarity end with hydroxyl tinct 3,5-dihydroxyl property of this group. After mixing erial with some organic solvent to a solution with certain concentration, the film was prepared substrate by spin polarized ultraviolet photoalignment optical microsco coatir^g method. Photo-crosslinking light a film could induce n pe with crossed pol nd then photoalignment film ematic liquid crystal to align arizers. Meanwhile the film a reaction occurred after irradiated by for liquid crystal was obtained. The homogeneously under observation of lso shows fine thermal stability.

关 键 词：液晶 光控取向 光敏 小分子 

分 类 号：O753.2[理学—晶体学]