Effects of polymer network on electrically induced reflection band broadening of cholesteric liquid crystals
Effects of polymer network on electrically induced reflection band broadening of cholesteric liquid crystals
复制标题
聚合物网络对胆甾型液晶电致反射带展宽的影响
DOI：
10.1002/polb.24317
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发表时间：
2017-06-01
影响因子：
--
通讯作者：
Yang, Deng-Ke
中科院分区：
文献类型：
--
作者：
Yu, Meina;Wang, Ling;Yang, Deng-Ke
具有负介电各向异性的聚合物稳定胆甾相液晶的反射带在直流电场作用下可以展宽，这归因于结构手性即聚合物网络的运动引起的螺距梯度。他们系统地改变了混合物的组成，如光引发剂浓度、单体官能度和手性掺杂剂，以探索它们对反射带展宽行为的影响。他们学习了如何控制聚合物网络的形态和离子密度，这反过来又决定了反射带宽。通过对混频的优化，大大提高了展宽效果，并在低电压下获得了较大的带宽。(C)2017年威利期刊公司J.Polym。科学，B部分：多晶硅。太棒了。2017年，55,835-846
The reflection band of polymer stabilized cholesteric liquid crystals with negative dielectric anisotropy can be broadened by DC electric fields, which was ascribed to the pitch gradient caused by the motion of the structural chirality, that is, the polymer network. They systematically varied the mixture components, such as the photo-initiator concentration, the monomer functionality, and the chiral dopant, to explore their influences on the reflection band broadening behavior. They learned how to control the polymer network morphology and ion density, which in turn determined the reflection bandwidth. By optimizing the mixture, they have greatly enhanced the broadening effect and achieved large bandwidth at low voltages. (c) 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 835-846