螺旋扭曲力常数对常黑聚合物稳定胆甾液晶光电性能的影响

徐超; 初宇天; 胡金良; 陆红波

doi:10.3788/YJYXS20163104.0358

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螺旋扭曲力常数对常黑聚合物稳定胆甾液晶光电性能的影响

材料与器件 | 更新时间：2020-08-12

- 螺旋扭曲力常数对常黑聚合物稳定胆甾液晶光电性能的影响
- Influence of helical twisting power on electro-optical properties of normal-mode polymer-stabilized cholesteric texture
- 液晶与显示 2016年31卷第4期页码：358-362
- 作者机构：
  
  合肥工业大学光电技术研究院,安徽合肥,230009
- 作者简介：
- 基金信息：
  
  国家高技术发展计划(863计划)(No.2012AA011901)();国家自然科学基金(No.61107014)();科技部973计划前研专项(No.2012CB72
- DOI：10.3788/YJYXS20163104.0358
  中图分类号： O753+.2
- 收稿日期：2015-12-01，
  
  修回日期：2015-12-22，
  
  纸质出版日期：2016-04-05
- 稿件说明：
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徐超, 初宇天, 胡金良等. 螺旋扭曲力常数对常黑聚合物稳定胆甾液晶光电性能的影响[J]. 液晶与显示, 2016,31(4): 358-362

XU Chao, CHU Yu-tian, HU Jin-liang etc. Influence of helical twisting power on electro-optical properties of normal-mode polymer-stabilized cholesteric texture[J]. , 2016,31(4): 358-362
徐超, 初宇天, 胡金良等. 螺旋扭曲力常数对常黑聚合物稳定胆甾液晶光电性能的影响[J]. 液晶与显示, 2016,31(4): 358-362 DOI： 10.3788/YJYXS20163104.0358.

XU Chao, CHU Yu-tian, HU Jin-liang etc. Influence of helical twisting power on electro-optical properties of normal-mode polymer-stabilized cholesteric texture[J]. , 2016,31(4): 358-362 DOI： 10.3788/YJYXS20163104.0358.

摘要

本文研究了螺旋扭曲力常数(HTP)对常黑模式聚合物稳定的胆甾相液晶(NB-PSCT)网络形貌和光电性能的影响。选用3种不同HTP值的手性剂

通过紫外光聚合诱导相分离法(PIPS)制备了具有相同螺距的常黑模式聚合物稳定的胆甾相液晶。结果表明:随着手性剂的螺旋扭曲力常数增大

聚合物网络变得致密

网络和液晶分子之间的弹性作用力增大

阈值饱和电压减小

响应过程中的关闭时间增加

迟滞宽度增大。

Abstract

The influence of the helical twisting power (HTP) on the morphology and electro-optical properties of normal-mode polymer-stabilized cholesteric texture (NB-PSCT) was investigated. In this study

PSCT was prepared by the means of polymerization induced phase separation (PIPS). The three PSCTs were in same pitch length by controlling the weight ratio of chiral dopants with different HTP

respectively. The investigated results suggested that as the value of HTP increases

the polymer networks become tighter

which leads to the reduction of the threshold voltage and saturation voltage

and the increase of the field-off response time and hysteresis width. It is attributed mainly to the stronger elastic force between the LC molecules and polymer networks.

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references

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