液晶与显示2018，Vol.33Issue(1)：43-48,6.DOI:10.3788/YJYXS20183301.0043
掺杂手性螺烯化合物的胆甾相液晶复合体系的光驱动动态取向行为
Light-driven dynamic alignment behavior of cholesteric liquid crystalline composites doped with chiral overcrowded alkenes
摘要
Abstract
In order to realize light-driven dynamic alignment of liquid crystal (LC) molecules,photo-responsive cholesteric liquid crystalline composite was prepared by doping chiral overcrowded alkenes into achiral LC hosts.The variation of helical pitch and the dynamic homogeneous alignment of LC molecules in photo-responsive cholesteric liquid crystals (ChLCs ) were investigated upon UV exposure with different intensities.The dynamic reconfiguration from focal conic to planar state was demonstrated based on the UV-intensity addressability of the helical pitch.The response time for dynamic homogeneous alignment of planar state can be accelerated from 600 s to 60 s with the increase of UV intensity,whereas the random alignment of focal conic state was developed in the absence of high-power UV exposure due to the sharp fluctuation of helical pitch.To properly modulate the inten-sity of UV light in multi-procedure protocols,the dynamic alignment technology with rapid response and stable homogeneousness was achieved.关键词
胆甾相液晶/手性螺烯化合物/光驱动/动态取向行为Key words
cholesteric liquid crystals/chiral overcrowded alkenes/light-driven/dynamic alignment behavior分类
信息技术与安全科学引用本文复制引用
孙健,兰若尘,张兰英,杨洲,杨槐..掺杂手性螺烯化合物的胆甾相液晶复合体系的光驱动动态取向行为[J].液晶与显示,2018,33(1):43-48,6.基金项目
国家自然科学基金(No.51573003 ,No.51373024) Supported by National Natural Science Foundation of China (No.51573003 ,No.51373024) （No.51573003 ,No.51373024）
