文献类型：期刊文献

中文题名：偶氮分子掺杂对蓝相液晶选择性反射波长的影响

英文题名：Influence of Selective Reflection Wavelength in Liquid Crystal Blue Phase Doped with Azo Materials

作者：周路[1];张丹[1];郑致刚[1];沈冬[1];包锡峰[2]

机构：[1]华东理工大学理学院化学物理研究室,上海200237;[2]江苏北方湖光光电有限公司工艺中心,江苏无锡214035

年份：2013

卷号：28

期号：1

起止页码：7

中文期刊名：液晶与显示

外文期刊名：Chinese Journal of Liquid Crystals and Displays

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD_E2013_2014】；

基金：国家自然科学基金(No.61108065);上海市晨光计划(No.12CG33);教育基本科研业务专项(No.WM1014015);龙腾光电有限公司新材料研发专项资助

语种：中文

中文关键词：偶氮;光致异构;蓝相;选择性反射波长

外文关键词：azo; light induced isomerization; blue phase; selective reflection wavelength

摘要：偶氮基团(—N=N—)在适当波长光的照射下,会发生可逆的顺反异构反应,这一反应中偶氮分子构型上的变化会影响到蓝相液晶中脆弱的晶格结构,并造成晶格参数的变化,进而影响到选择性反射波长的变化,甚至有时会造成蓝相相态的消失。文章合成并将几种偶氮化合物掺入手性向列相液晶中,再变温至BPI,对比了这几种偶氮化合物对蓝相液晶选择性反射波长的影响,从而得出更有实际使用价值的偶氮分子,在此基础上还从分子结构角度分析了产生差异的原因,为进一步的改进工作提供了方向。
The azo（—N=N—） group can have reversible trans-cis isomerization reaction under the appropriate wavelength light irradiation.The change of the azo molecular configuration affects fragile lattice structure of the blue phase liquid crystal and leads to the change of the lattice parameters,thus the selective reflection wavelength is also changed.Sometimes the change of azo molecular configuration can make the blue phase disappeared.In this paper several azo compounds were synthesized and doped in chiral nematic phase liquid crystal,then the temperature was changed to get blue phase I.The influence of selective reflection wavelength was studied and the azo compounds suitable for application were found.The reason of the difference was also discussed and the suggestion for further improvement was given.