Reflective Band Memory Effect of Cholesteric Polymer Networks Based on Washout/Refilling Method

被引：23

作者：

Zhang, Dongdong ^{[1
]}

Shi, Weiting ^{[1
]}

Cao, Hui ^{[1
]}

Chen, Yinjie ^{[2
]}

Zhao, Limin ^{[1
]}

Gan, Ping ^{[1
]}

Yang, Zhou ^{[1
]}

Wang, Dong ^{[1
]}

He, Wanli ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Dept Mat Phys & Chem, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Beijing Inst Graph Commun, Beijing Engn Res Ctr Printed Elect, Beijing 102600, Peoples R China

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2020年 / 221卷 / 22期

基金：

中国国家自然科学基金;

关键词：

cholesteric liquid crystals; memory effects; polymer networks; selective reflection; washout; refilling methods; LIQUID-CRYSTALLINE MATERIALS; LIGHT-REFLECTION; FILMS;

D O I：

10.1002/macp.201900572

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The method of washout/refilling is applied to a polymer stabilized cholesteric liquid crystal. Polymer networks are prepared with different concentrations of monomers under different polymerization conditions. By refilling different solvents or liquid crystals into the polymer network, reflective bands with different central wavelength and bandwidth are observed. It is confirmed that the polymer network can reproduce the initial reflection band of cholesteric phase, and corresponding explanations are given. When polymers have denser networks and smaller micropores, it shows better memory effects on the reflective band. These results can be potentially used in reflective displays, optical shielding films, diffraction gratings, sensors, and so on.

引用

页数：6

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