Effect of Network Concentration on the Performance of Polymer-Stabilized Cholesteric Liquid Crystals with a Double-Handed Circularly Polarized Light Reflection Band
Effect of Network Concentration on the Performance of Polymer-Stabilized Cholesteric Liquid Crystals with a Double-Handed Circularly Polarized Light Reflection Band
复制标题
网络浓度对双旋圆偏振光反射带聚合物稳定胆甾型液晶性能的影响
DOI：
10.1021/jp903394r
复制
发表时间：
2009-09-17
影响因子：
3.7
通讯作者：
Wei, Jie
中科院分区：
文献类型：
--
作者：
Guo, Jinbao;Yang, Huai;Wei, Jie
采用洗出/再填充法制备了具有双手圆偏振反射带的聚合物稳定双折射液晶（PSCLC）。通过从原始PSCLC膜中除去低摩尔量LC，可以将所需的液晶（LC）渗透到预制的聚合物网络中。结果表明，聚合物网络的记忆控制所得材料的性能。预制聚合物网络的浓度也在形成具有清晰的双手圆偏振反射带的单层双折射LC（Ch-LC）结构中起相关作用。当PSCLC膜中的网络浓度较低时，由于网络的锚定作用较弱，导致体系中的光散射现象改变了Ch-LC的反射特性。随着网络浓度的增加，这两种圆偏振反射都变得更加明显，网络的锚定效应也随之增强。我的...
Polymer-stabilized cholesteric liquid crystals (PSCLCs) with a double-handed circularly polarized reflection band are fabricated by a wash-out/refill method. By removing the low molar weight LCs from the original PSCLC film, desirable liquid crystals (LCs) can be infiltrated into a prefabricated polymer network. The results showed that the memory of the polymer network controls the resulting material properties. The concentration of the prefabricated polymer network also plays a relevant role in the formation of a single-layer cholesteric LC (Ch-LC) structure that has a clear-cut double-handed circularly polarized reflection band. A light-scattering phenomenon occurring in the system alters the reflection properties of Ch-LCs, which is due to the weak anchoring effect of the network when PSCLC film contains a low network concentration. Both kinds of circularly polarized reflection become more obvious with increase in the network concentration, followed by the strong anchoring effect of the network. The te...