首页|Electrically induced coloration of polymer-stabilized cholesteric liquid crystal films with broadband reflection capability for smart windows

Electrically induced coloration of polymer-stabilized cholesteric liquid crystal films with broadband reflection capability for smart windows

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In this work, a novel approach to realizing the electrically induced coloration of polymer-stabilized cholesteric liquid crystal (LC) films with broadband reflection capability for smart windows was reported. Only starting common materials and an established preparation method were used. The polymer-stabilized cholesteric LC films with broadband reflection capability were prepared via the method of polymerization-induced pitch gradient. After doping with a commercial ionic liquid which served as the supporting electrolyte in the system, the initial broadband reflection capability of the polymer-stabilized cholesteric LCs film was not damaged, and the film can change into a colored state from a colorless state under a low direct current (DC) voltage. The color of the polymer-stabilized cholesteric LCs also can gradually disappear after the removal of the field despite the slow response rate. The as-prepared polymer-stabilized cholesteric LCs in this work not only can be applied in the energy-saving smart windows and thermal management for buildings, but also presented the performance of electrically induced coloration under a low voltage. This work is expected to provide a creative approach for the preparation of electrochromic energy-saving smart windows.

Polymer-stabilized cholesteric liquid crystalsBroadband reflection capabilityIonic liquidElectrically induced colorationEnergy-saving smart windowsREDOX REACTION

Gao, Jianjing、Ma, Cheng、Zhao, Yang、Yao, Ruijuan、Miao, Zongcheng、Shen, Wenbo、Zhang, Huimin、Liu, Jie、Zhao, Xiangrong

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Xijing Univ

Northwestern Polytech Univ

Res Ctr Humanoid Sensing

2022

Dyes and Pigments

Dyes and Pigments

EISCI
ISSN:0143-7208
年,卷(期):2022.203
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