Liquid-crystal photoalignment by photosensitive fluorinated poly(arylene ether)
Liquid-crystal photoalignment by photosensitive fluorinated poly(arylene ether)
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DOI：
10.1063/1.1894604
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发表时间：
2005-03
影响因子：
4
通讯作者：
Xiangdan Li;Zhenxin Zhong;S. H. Lee;G. Ghang;Myong-Hoon Lee
中科院分区：
文献类型：
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作者：
Xiangdan Li;Zhenxin Zhong;S. H. Lee;G. Ghang;Myong-Hoon Lee
报道了一种基于主链含查尔酮单元的含氟聚芳醚的高光敏性液晶光取向材料。该氟化聚（亚芳基醚）表现出无缺陷的液晶均匀排列后，照射线性偏振紫外光10秒。光谱分析表明，查尔酮部分之间的[2+2]环加成产生的表面各向异性，以诱导一个有效的排列液晶。
We report a liquid-crystal (LC) photoalignment material with a high photosensitivity based on the fluorinated poly(arylene ether) containing a chalcone unit in the main chain. The fluorinated poly(arylene ether) exhibited defect-free homogeneous alignment of LCs upon irradiation of linearly polarized UV light for 10s. Spectroscopic analyses revealed that [2+2] cycloaddition between the chalcone moieties generated the surface anisotropy to induce an efficient alignment of LCs.