中华医学超声杂志

应用化学 ›› 2020, Vol. 37 ›› Issue (12): 0-0.

• 封面图片 •    下一篇

可溶性聚酰亚胺液晶取向膜的制备与性能

文璞山a*, 何瑞b, 赵光练a, 梁兴a, 李明勳c*   

  1. a遵义师范学院化学化工学院 贵州 遵义 563006;
    b武汉华星光电技术有限公司 武汉 430078;
    c韩国全北大学柔韧印刷电子研究生院 韩国 全州 54896
  • 收稿日期:2020-06-15 修回日期:2020-09-11 接受日期:2020-09-18 出版日期:2020-12-01 发布日期:2020-12-07
  • 通讯作者: 李明勳,教授; Tel/Fax:+82-63-22412337; E-mail:mhlee2@jbnu.ac.kr; 研究方向:液晶材料的设计与合成
    共同通讯联系人:文璞山,副教授; Tel/Fax:0851-28927159; E-mail:wenpushan@126.com; 研究方向:功能材料的制备和应用
  • 基金资助:
    国家自然科学基金(21766040)、贵州省科技厅科学技术基金(黔科合基础[2016]1419)、贵州省教育厅自然科学研究项目(黔教合KY字[2019]058)和韩国教育部国家研究基金基础科学研究项目(2018R1D1A1B07044250)资助

Preparation and Properties of Soluble Polyimides as the Liquid Crystal Alignment Layer

WEN Pushana*, HE Ruib, ZHAO Guangliana, LIANG Xinga, LEE Myonghoonc*   

  1. aSchool of Chemistry and Chemical Engineering,Zunyi Normal University,Zunyi,Guizhou 563006,China;
    bWuhan China Star Optoelectronics Technology Co.,Ltd.,Wuhan 430078,China;
    cGraduate School of Flexible and Printable Electronics,Jeonbuk National University,Jeonju 54896,Korea
  • Received:2020-06-15 Revised:2020-09-11 Accepted:2020-09-18 Published:2020-12-01 Online:2020-12-07
  • Contact: LEE Myonghoon, professor; Tel/Fax:+82-63-22412337; E-mail:mhlee2@jbnu.ac.kr; Research interests:synthesis and design of liquid crystal materials
    Co-corresponding author:WEN Pushan, associate professor; Tel/Fax:0851-28927159; E-mail:wenpushan@126.com; Research interests:preparation and application of functional materials
  • Supported by:
    National Natural Science Foundation of China(No.21766040), Guizhou Provincial Natural Science Foundation(No.[2016]1419), the Natural Science Research Project of Guizhou Education Department(No.[2019]058) and the Basic Science Research Program Through the National Research Foundation of Korea (NRF) funded by the Ministry of Education(No.2018R1D1A1B07044250)

被引次数

3

摘要： 液晶取向膜是液晶显示器中的关键材料,为了制得性能优良的液晶取向膜,我们通过铃木偶联反应制备了3种含有不同末端基团的3,5-二氨基联苯,将制得的3种二胺单体分别与环丁烷四甲酸二酐聚合得到3种新型的聚酰亚胺。 利用核磁氢谱对单体和聚合物的结构进行了表征,测试了聚合物的溶解性、热稳定性以及用作液晶取向膜的性能。 结果表明,所得的聚酰亚胺具有良好的溶解性和热稳定性,经过机械摩擦后,末端带有甲氧基的聚酰亚胺能使液晶分子平行于摩擦方向取向,末端带有苯氧羰基和联苯氧羰基的聚酰亚胺能使液晶分子垂直于摩擦方向取向。 此类可溶性的聚酰亚胺液晶取向膜将简化制备工艺并在柔性显示器件中具有较大的应用价值。

关键词: 聚酰亚胺, 取向膜, 溶解性, 热稳定性

Abstract: The liquid crystal alignment layer plays a critical role in the liquid crystal display. In order to prepare liquid crystal alignment layer with excellent properties, three kinds of 3,5-diaminobiphenyls with different terminal groups were synthesized by Suzuki coupling reaction, and three polyimides were prepared by polymerization of the three diamines with 1,2,3,4-cyclobutanetetracarboxylic dianhydride. The structures of monomers and polymers were characterized by proton nuclear magnetic resonance (1H NMR) spectroscopy. The solubility, thermal stability and properties of the polymers as liquid crystal alignment layer were studied. The resulting polyimides show good solubility and thermal stability. After rubbing, the polyimide with methoxy as terminal group can align the liquid crystal molecules parallel to the rubbing direction. On the contrary, the polyimides with phenoxycarbonyl and biphenoxycarbonyl as terminal groups align the liquid crystal molecules perpendicular to the rubbing direction. This kind of soluble polyimide liquid crystal alignment film will simplify the preparation process and present great application value in flexible display devices.

Key words: polyimide, alignment layer, solubility, thermal stability

中图分类号: 

网站版权 © 应用化学     本网站备案：吉ICP备12000082号