液晶与显示2012，Vol.27Issue(1)：8-13,6.DOI:10.3788/YJYXS20122701.0008
侧链含稠环的新型聚酰亚胺液晶垂直取向剂的制备及表征
Preparation and Characterization of Novel Polyimide with Thick Ring in Side Chain for Vertical Alignment Liquid Crystals
摘要
Abstract
A novel functional diamine (H8-c) with thick ring and long alkoxy was synthesized from 3,5-dinitrobenzoyl chloride, estradiol and 1-Bromooctane. A polyimide (PI), applied in liquid crystal (LC) vertical orientation agent, was prepared from p-phenylenediamine (PDA), 1,2,3,4-cyclobutanetetracarboxylicdianhydride (CBDA) and H8-c. The PI possessed excellent vertical alignment for nematic LC. The vertical alignment of LC cell which was kept at 120 ℃ for 12 h was still stable. It could be seen that the thermal stability of the vertical alignment of LC was excellent. The temperature at 5% weight loss of the PI (T5) is as high as 400 ℃ in nitrogen. The temperature at 10% weight loss of the PI (T10) is as high as 480 ℃ in nitrogen. The PI film exhibited high transparency (95%) at wavelengths above 400 nm.关键词
聚酰亚胺/垂直取向/热稳定性/液晶Key words
polyimides/ vertical alignment/ thermal stability/ liquid crystals分类
数理科学引用本文复制引用
郭春桔,夏森林,孙振,汪映寒..侧链含稠环的新型聚酰亚胺液晶垂直取向剂的制备及表征[J].液晶与显示,2012,27(1):8-13,6.基金项目
国家自然科学基金(No.50973067,51173115) （No.50973067,51173115）
教育部留学回国人员科研启动基金(No.20071108-18-12) （No.20071108-18-12）
四川大学学生创新实验项目(No.0030904116002) （No.0030904116002）
