Influence of Anchoring Effect of Polymer Network on Electro-Optic Property of Polymer-Stabilized Cholesteric Texture

ZHANG Jun; SONG Zhi-gang; XIONG Xian-feng; NIU Hong-lin; LU Hong-bo; LV Guo-qiang

doi:10.3788/YJYXS20132805.0674

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Influence of Anchoring Effect of Polymer Network on Electro-Optic Property of Polymer-Stabilized Cholesteric Texture

Material Physics & Chemistry | 更新时间：2020-08-12

- Influence of Anchoring Effect of Polymer Network on Electro-Optic Property of Polymer-Stabilized Cholesteric Texture
- Chinese Journal of Liquid Crystals and Displays Vol. 28, Issue 5, Pages: 674-678(2013)
- 作者机构：
  
  1. 合肥工业大学仪器科学与光电工程学院,安徽合肥,230009
  2. 特种显示技术教育部重点实验室, 特种显示技术国家工程实验室, 现代显示技术省部共建国家重点实验室培育基地,安徽合肥,230009
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No. 61107014);Supported by National
- DOI：10.3788/YJYXS20132805.0674
  CLC： TN27
- Received：16 April 2013，
  
  Revised：05 May 2013，
  
  Published：15 October 2013
- 稿件说明：
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张俊, 宋志刚, 熊贤风, 牛红林, 陆红波, 吕国强. 聚合网络的锚定作用对聚合物稳定胆甾相液晶光电性能的影响[J]. 液晶与显示, 2013,28(5): 674-678

ZHANG Jun, SONG Zhi-gang, XIONG Xian-feng, NIU Hong-lin, LU Hong-bo, LV Guo-qiang. Influence of Anchoring Effect of Polymer Network on Electro-Optic Property of Polymer-Stabilized Cholesteric Texture[J]. , 2013,28(5): 674-678
张俊, 宋志刚, 熊贤风, 牛红林, 陆红波, 吕国强. 聚合网络的锚定作用对聚合物稳定胆甾相液晶光电性能的影响[J]. 液晶与显示, 2013,28(5): 674-678 DOI： 10.3788/YJYXS20132805.0674.

ZHANG Jun, SONG Zhi-gang, XIONG Xian-feng, NIU Hong-lin, LU Hong-bo, LV Guo-qiang. Influence of Anchoring Effect of Polymer Network on Electro-Optic Property of Polymer-Stabilized Cholesteric Texture[J]. , 2013,28(5): 674-678 DOI： 10.3788/YJYXS20132805.0674.

摘要

采用紫外光聚合诱导相分离法(PIPS)制备了聚合物稳定胆甾相液晶

通过控制聚合时间

调节聚合物网络与液晶分子之间的相互作用

从而改善PSCT的光电性能。结果表明:延长聚合时间

提高反应程度

从而增强聚合物网络对液晶分子的锚定力

而对聚合物网络形貌的影响较小。在正模式聚合物稳定胆甾相液晶中

聚合物网络垂直于基板排列

有利于形成场致向列相

锚定作用强

阈值和饱和电压小

关态透过率高

对比度低

响应速度慢

迟滞宽度大。

Abstract

Polymer-stabilized cholesteric texture (PSCT) samples were prepared by means of polymerization induced phase separation. The electric property of PSCT can be improved by adjusting curing time

which results in the control of the elastic force between polymer networks and liquid crystal molecules. It was indicated that extending the polymerization time can improve the degree of polymerization of monomer

thereby enhancing the anchoring force of polymer networks

whereas has little influence on the morphology of polymer networks. In a normal-mode PSCT

polymer networks are arranged perpendicular to the base plate

which is conducive to the formation of a nematic phase induced by a electric field. With enhancing anchoring effect

low threshold (saturated) voltage

high closed transmittance

low contrast ratio

slow response

and big hysteresis width can be observed.

关键词

Keywords

references

Dierking I. Polymer network-stabilized liquid crystals [J]. Adv. Mater., 2000, 12(3):167-181.[2] Yin Y H, Li W B, Cao H. Effects of monomer structure on the morphology of poly-network and the electro-optical property of reverse-mode polymer-stabilized cholesteric texture [J]. J. Appl. Polymer Science, 2009, 111(3):1353-1357.[3] Liang Hao-Hsun, Wang Po-Hsiang, Wu Cheng-Che, et al. Polymer network morphology and electro-optical pro-perties of electrothermal switchable bistable light shutters with various chiral dopant concentrations [J]. Mol. Cryst. Liq. Cryst., 2011, 552(1):111-122.[4] Liang Hao-Hsun, Wu Cheng-Che, Wang Po-Hsiang, et al. Electro-thermal switchable bistable reverse mode polymer stabilized cholesteric texture light shutter [J]. Opt. Mater., 2011, 33(8):1195-1202.[5] Bao R, Liu C M, Yang D K. Smart bistable polymer stabilized cholesteric texture light shutter [J]. Appl. Phys. Express, 2009, 2(11):112401(1-3).[6] Du Fang, Gauza Sebastian, Wu Shin-Tson. Influence of curing temperature and high birefringence on the properties of polymer-stabilized liquid crystals [J]. Opt. Express, 2003, 11(22):2891-2896.[7] Dierking I, Kosbar L L, Afzali-Ardakani A, et al. Two-stage switching behavior of polymer stabilized cholesteric textures [J]. J. Appl. Phys., 1997, 81(7):3007-3014.[8] Natarajan L V, Beckel E R, Tondiglia V P, et al. The effect of weak polymer stabilization on the switching properties of cholesteric liquid crystals [J]. Mol. Cryst. Liq. Cryst., 2009, 502(1):143-153.[9] Kumar P, Kang Shin-Woong, Lee S H. Advanced bistable cholesteric light shutter with dual frequency nematic liquid crystal [J]. Opt. Mater. Express, 2012, 2(8):1121-1134.[10] Ma Ji, Shi Lei, Yang Deng-Ke. Bistable polymer stabilized cholesteric texture light shutter [J]. Appl. Phys. Express, 2010, 3(2):021702(1-3).[11] 刘国柱,黄子强,杨文君,等. 低阈值电压聚合物分散性液晶膜的电光特性 [J]. 液晶与显示,2009,24(3):383-388.[12] 王庆兵,凌志华,李海峰,等.液晶中形成的聚合物网络织构及形貌的研究 [J]. 液晶与显示,1999,14(2):94-103.[13] 牛红林,华懿魁,史高飞,等.聚合电场频率对聚合物稳定胆甾相液晶光电性能的影响 [J]. 液晶与显示,2012,27(1):21-25.[14] 夏亮,徐琼,陆红波,等.聚合物分散胆甾相液晶相形态调控与光电性能 [J]. 液晶与显示,2011,26(1):306-310.

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Related Author

SONG Zhi-gang

ZHANG Jun

HU Jin-liang

LV Guo-qiang

LU Hong-bo

NIU Hong-lin

HUA Yi-kui

SHI Gao-fei

Related Institution

Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology

School of Instrument Science and Opto-Electronic Engineering

School of Chemical Engineering, Hefei University of Technology

Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, National Key Lab of Advanced Display Technology, Hefei University of Technology, Hefei 230009,China

School of Instrument Science and Opto-Electronic Engineering, Hefei University of Technology

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