单体材料结构对全息聚合物分散液晶光栅电光特性的影响

刘永刚; 郑致刚; 彭增辉; 胡立发; 曹召良; 李文萃; 宣 丽

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单体材料结构对全息聚合物分散液晶光栅电光特性的影响

材料物理和化学 | 更新时间：2020-08-12

- 单体材料结构对全息聚合物分散液晶光栅电光特性的影响
- Influence of Chemical Structure of Monomers on Electro-Optical Characteristics of HPDLC Gratings
- 液晶与显示 2009年24卷第4期页码：487-492
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春 130033,E-mail: ygliujilin@yahoo.com.cn
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O438.1;TN141.9
- 收稿日期：2009-02-24，
  
  修回日期：1900-01-02，
  
  网络出版日期：2009-08-30，
  
  纸质出版日期：2009-08-30
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刘永刚;郑致刚;彭增辉;胡立发;曹召良;李文萃;宣丽. 单体材料结构对全息聚合物分散液晶光栅电光特性的影响[J]. 液晶与显示, 2009,24(04): 487-492

LIU Yong-gang;ZHENG Zhi-gang;PENG Zeng-hui;HU Li-fa;CAO Zhao-liang;LI Wen-cui;Xuan Li. Influence of Chemical Structure of Monomers on Electro-Optical Characteristics of HPDLC Gratings[J]. 液晶与显示, 2009,24(04): 487-492
刘永刚;郑致刚;彭增辉;胡立发;曹召良;李文萃;宣丽. 单体材料结构对全息聚合物分散液晶光栅电光特性的影响[J]. 液晶与显示, 2009,24(04): 487-492 DOI：

LIU Yong-gang;ZHENG Zhi-gang;PENG Zeng-hui;HU Li-fa;CAO Zhao-liang;LI Wen-cui;Xuan Li. Influence of Chemical Structure of Monomers on Electro-Optical Characteristics of HPDLC Gratings[J]. 液晶与显示, 2009,24(04): 487-492 DOI：

摘要

使用3种分子结构不同的单体材料体系制备了全息聚合物分散液晶光栅

对所制备光栅的形貌、衍射特性、驱动特性、单体双键转化率等进行了研究。研究结果表明:体系中单体材料结构刚性的增加有助于相分离结构的改善。由柔性单体制备的光栅样品

双键转化率低

光栅液晶区域液晶微滴尺寸小

驱动电压高;刚性适度的样品

其光栅液晶区域液晶微滴较大

衍射能力达到96％

实际衍射效率为82%

且曝光结束后单体的单体双键转化率达到了57％

驱动电压为8.3 V/m;随着单体材料结构刚性的继续增加

光栅液晶微滴反而变小

液晶区域变窄

驱动电压升高。因此

合理增加单体的刚性程度有助于提高光栅相分离及光栅的电光特性。

Abstract

Holographic polymer dispersed liquid crystal is a kind of novel photoelectronomic information functional device. In this study

effect of chemical structure of monomers on holographic polymer dispersed liquid crystal gratings was investigated from the morphology

the diffraction efficiency

the electro-optical tunable performance and ene-conversions

respectively. The results showed that

the chemical structure of monomers plays an important role in performance of H-PDLC gratings. A rigid molecular structure forms a clear morphology

high diffraction efficiency and low threshold voltage gratings than a flexible molecular structure. In addition

the rigidity ring increases interactions between molecules and restricts the motion between them

thus enhances the phase separation

electro-optical characteristics and ene-conversions. On the other hand

with the rigid structure of monomer material increase

making the volume of LC droplets become smaller

LC regional narrow

so the drive voltage was increased

however

there is still a drop than flexible molecules. Therefore increa-sing the rigid structure of monomer reasonably can improve the phase separation and electro-optical properties of HPDLC gratings.

关键词

Keywords

references

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