Synthesis and Photoinduced Reorientation of Liquid Crystalline Polymers with Phenyl Thiobenzoate Side Groups
作者:Nobuhiro Kawatsuki、Hiroki Uchimura、Risa Hosoda、Mizuho Kondo
DOI:10.1021/ma4003193
日期:2013.3.26
the side groups generated an optical anisotropy in all the LCP films, but the amplitude depended on the alkylene spacer length and the type of the polymer main chain. The photoirradiated films were transparent in the visible region because the photoreacted products expressed less color. The axis-selective photoreaction of films followed by the thermally generated self-organization processes effectively
合成具有4-甲氧基苯基硫代苯甲酸酯侧基的液晶聚(甲基)丙烯酸酯(LCP),以获得在可见光区域透明的光致分子取向结构。使用线性偏振(LP)313 nm光研究了薄膜的轴选择性光反应和光诱导的重新取向行为。侧基的轴选择性光反应在所有LCP薄膜中均产生了光学各向异性,但振幅取决于亚烷基间隔基长度和聚合物主链的类型。光辐照的膜在可见光区域是透明的,因为光反应的产物表现出较少的颜色。当介晶基团通过六亚甲基间隔基连接到聚合物主链时,S)为0.62,双折射(Δn)约为0.17。相反,当LCP包含长的亚烷基间隔基时,面外重定向占主导。