Citation: WEN Pushan, HE Rui, ZHAO Guanglian, LIANG Xing, LEE Myonghoon. Preparation and Properties of Soluble Polyimides as the Liquid Crystal Alignment Layer[J]. Chinese Journal of Applied Chemistry, ;2020, 37(12): 1403-1410. doi: 10.11944/j.issn.1000-0518.2020.12.200185 shu

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

a.
School of Chemistry and Chemical Engineering, Zunyi Normal University, Zunyi, Guizhou 563006, China
b.
Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan 430078, China
c.
Graduate School of Flexible and Printable Electronics, Jeonbuk National University, Jeonju 54896, Korea

Corresponding author: WEN Pushan, wenpushan@126.com LEE Myonghoon, mhlee2@jbnu.ac.kr
Received Date: 15 June 2020
Revised Date: 11 September 2020
Accepted Date: 18 September 2020

Fund Project: Supported by the 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)the Natural Science Research Project of Guizhou Education Department [2019]058Guizhou Provincial Natural Science Foundation [2016]1419the Basic Science Research Program Through the National Research Foundation of Korea (NRF) funded by the Ministry of Education 2018R1D1A1B07044250the National Natural Science Foundation of China 21766040

Figures(7)

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.
- polyimide,
- alignment layer,
- solubility,
- thermal stability
1. [1]
  Ni H J, Liu J G, Wang Z H. A Review on Colorless and Optically Transparent Polyimide Films:Chemistry, Process and Engineering Applications[J]. J Ind Eng Chem, 2015,28:16-27.
2. [2]
  Liaw D J, Wang K L, Huang Y C. Advanced Polyimide Materials:Syntheses, Physical Properties and Applications[J]. Prog Polym Sci, 2012,37(7):907-974.
3. [3]
  Hoogboom J, Rasing T, Rowan A E. LCD Alignment Layers. Controlling Nematic Domain Properties[J]. J Mater Chem, 2006,16(14):1305-1314.
4. [4]
  Ishihara S, Mizusaki M. Alignment Control Technology of Liquid Crystal Molecules[J]. J Soc Inf Display, 2020,28(1):44-74.
5. [5]
  Hahm S G, Ko Y G, Rho Y. Liquid Crystal Alignment in Advanced Flat-Panel Liquid Crystal Displays[J]. Curr Opin Chem Eng, 2013,2(1):71-78.
6. [6]
  Ge J J, Li C Y, Xue G. Rubbing-Induced Molecular Reorientation on an Alignment Surface of an Aromatic Polyimide Containing Cyanobiphenyl Side Chains[J]. J Am Chem Soc, 2001,123:5768-5776.
7. [7]
  Lee S W, Lee S J, Hahm S G. Role of the n-Alkyl End of Bristles in Governing Liquid Crystal Alignment at Rubbed Films of Brush Polymer Rods[J]. Macromolecules, 2005,38:4331-4338.
8. [8]
  Lee T J, Hahm S G, Lee S W. Perpendicular and Parallel Alignment Behaviors of Liquid Crystals at Rubbed Films of Brush Polyimides[J]. Mater Sci Eng B, 2006,132(1/2):64-69.
9. [9]
  Song Y, Yuan L, Wang Z. Photo-aligning of Polyimide Layers for Liquid Crystals[J]. Polym Adv Technol, 2019,30(5):1243-1250.
10. [10]
  Liu H S, Jeng S C. Liquid Crystal Alignment by Polyhedral Oligomeric Silsesquioxane (POSS)-Polyimide Nanocomposites[J]. Opt Mater, 2013,35(7):1418-1421.
11. [11]
  Park S G, Park H G. Alignment of Liquid Crystal Molecules on Self-assembled Monolayer with Fluorinated Alkyl Chain at Different Deposition Time[J]. Opt Mater, 2018,85:298-302.
12. [12]
  Siqing S, Wu H, Takahara A. Molecular Reorientation of Polyimide Film Induced by Thermal Nanoimprint Lithography and Liquid Crystals Alignment on It[J]. Polymer, 2015,72:113-117.
13. [13]
  Zhuang Y B, Seong J G, Lee Y M. Polyimides Containing Aliphatic/Alicyclic Segments in the Main Chains[J]. Prog Polym Sci, 2019,92:35-88.
14. [14]
  Yi C, Li W, Shi S. High-Temperature-Resistant and Colorless Polyimide:Preparations, Properties, and Applications[J]. Sol Energy, 2020,195:340-354.
15. [15]
  WEN Pushan, HE Rui, ZHAO Guanglian. Preparation and Properties of Polyimides as Liquid Crystal Alignment Layer[J]. China Plast Ind, 2020,48(8):16-20.
16. [16]
  Sakamoto K, Arafune R, Ito N. Determination of Molecular Orientation of Very Thin Rubbed and Unrubbed Polyimide Films[J]. J Appl Phys, 1996,80(1):431-439.
17. [17]
  Lee Y J, Choi J G, Song I K. Effect of Side Chain Structure of Polyimides on a Pretilt Angle of Liquid Crystal Cells[J]. Polymer, 2006,47(5):1555-1562.
1. [1]
  Xuewei BA , Cheng CHENG , Huaikang ZHANG , Deqing ZHANG , Shuhua LI . Preparation and luminescent performance of Sr_1-xZrSi₂O₇∶xDy³⁺ phosphor with high thermal stability. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 357-364. doi: 10.11862/CJIC.20240096
2. [2]
  Feng Zheng , Ruxun Yuan , Xiaogang Wang . “Research-Oriented” Comprehensive Experimental Design in Polymer Chemistry: the Case of Polyimide Aerogels. University Chemistry, 2024, 39(10): 210-218. doi: 10.12461/PKU.DXHX202404027
3. [3]
  Yonghui Wang , Weilin Chen , Yangguang Li . Knowledge Construction of “Solubility of Inorganic Substances” in Elemental Chemistry Teaching. University Chemistry, 2024, 39(4): 261-267. doi: 10.3866/PKU.DXHX202312102
4. [4]
  Shitao Fu , Jianming Zhang , Cancan Cao , Zhihui Wang , Chaoran Qin , Jian Zhang , Hui Xiong . Study on the Stability of Purple Cabbage Pigment. University Chemistry, 2024, 39(4): 367-372. doi: 10.3866/PKU.DXHX202401059
5. [5]
  Xuyang Wang , Jiapei Zhang , Lirui Zhao , Xiaowen Xu , Guizheng Zou , Bin Zhang . Theoretical Study on the Structure and Stability of Copper-Ammonia Coordination Ions. University Chemistry, 2024, 39(3): 384-389. doi: 10.3866/PKU.DXHX202309065
6. [6]
  Jiao CHEN , Yi LI , Yi XIE , Dandan DIAO , Qiang XIAO . Vapor-phase transport of MFI nanosheets for the fabrication of ultrathin b-axis oriented zeolite membranes. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 507-514. doi: 10.11862/CJIC.20230403
7. [7]
  Xiaoning TANG , Junnan LIU , Xingfu YANG , Jie LEI , Qiuyang LUO , Shu XIA , An XUE . Effect of sodium alginate-sodium carboxymethylcellulose gel layer on the stability of Zn anodes. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1452-1460. doi: 10.11862/CJIC.20240191
8. [8]
  Jiaxi Xu , Yuan Ma . Influence of Hyperconjugation on the Stability and Stable Conformation of Ethane, Hydrazine, and Hydrogen Peroxide. University Chemistry, 2024, 39(11): 374-377. doi: 10.3866/PKU.DXHX202402049
9. [9]
  Jing SU , Bingrong LI , Yiyan BAI , Wenjuan JI , Haiying YANG , Zhefeng Fan . Highly sensitive electrochemical dopamine sensor based on a highly stable In-based metal-organic framework with amino-enriched pores. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1337-1346. doi: 10.11862/CJIC.20230414
10. [10]
  Yikai Wang , Xiaolin Jiang , Haoming Song , Nan Wei , Yifan Wang , Xinjun Xu , Cuihong Li , Hao Lu , Yahui Liu , Zhishan Bo . 氰基修饰的苝二酰亚胺衍生物作为膜厚不敏感型阴极界面材料用于高效有机太阳能电池. Acta Physico-Chimica Sinica, 2025, 41(3): 2406007-. doi: 10.3866/PKU.WHXB202406007
11. [11]
  Shanghua Li , Malin Li , Xiwen Chi , Xin Yin , Zhaodi Luo , Jihong Yu . 基于高离子迁移动力学的取向ZnQ分子筛保护层实现高稳定水系锌金属负极的构筑. Acta Physico-Chimica Sinica, 2025, 41(1): 2309003-. doi: 10.3866/PKU.WHXB202309003
12. [12]
  Xiao Liu , Guangzhong Cao , Mingli Gao , Hong Wu , Hongyan Feng , Chenxiao Jiang , Tongwen Xu . Seawater Salinity Gradient Energy’s Job Application in the Field of Membranes. University Chemistry, 2024, 39(9): 279-282. doi: 10.3866/PKU.DXHX202306043
13. [13]
  Shuyu Liu , Xiaomin Sun , Bohan Song , Gaofeng Zeng , Bingbing Du , Chongshen Guo , Cong Wang , Lei Wang . Design and Fabrication of Phospholipid-Vesicle-based Artificial Cells towards Biomedical Applications. University Chemistry, 2024, 39(11): 182-188. doi: 10.12461/PKU.DXHX202404113
14. [14]
  Kun Xu , Xinxin Song , Zhilei Yin , Jian Yang , Qisheng Song . Comprehensive Experimental Design of Preferential Orientation of Zinc Metal by Heat Treatment for Enhanced Electrochemical Performance. University Chemistry, 2024, 39(4): 192-197. doi: 10.3866/PKU.DXHX202309050
15. [15]
  Shengjuan Huo , Xiaoyan Zhang , Xiangheng Li , Xiangning Li , Tianfang Chen , Yuting Shen . Unveiling the Marvels of Titanium: Popularizing Multifunctional Colored Titanium Product Films. University Chemistry, 2024, 39(5): 184-192. doi: 10.3866/PKU.DXHX202310127
16. [16]
  Lan Ma , Cailu He , Ziqi Liu , Yaohan Yang , Qingxia Ming , Xue Luo , Tianfeng He , Liyun Zhang . Magical Surface Chemistry: Fabrication and Application of Oil-Water Separation Membranes. University Chemistry, 2024, 39(5): 218-227. doi: 10.3866/PKU.DXHX202311046
17. [17]
  Tianqi Bai , Kun Huang , Fachen Liu , Ruochen Shi , Wencai Ren , Songfeng Pei , Peng Gao , Zhongfan Liu . 石墨烯厚膜热扩散系数与微观结构的关系. Acta Physico-Chimica Sinica, 2025, 41(3): 2404024-. doi: 10.3866/PKU.WHXB202404024
18. [18]
  Yiping HUANG , Liqin TANG , Yufan JI , Cheng CHEN , Shuangtao LI , Jingjing HUANG , Xuechao GAO , Xuehong GU . Hollow fiber NaA zeolite membrane for deep dehydration of ethanol solvent by vapor permeation. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 225-234. doi: 10.11862/CJIC.20240224
19. [19]
  Jiaxin Su , Jiaqi Zhang , Shuming Chai , Yankun Wang , Sibo Wang , Yuanxing Fang . Optimizing Poly(heptazine imide) Photoanodes Using Binary Molten Salt Synthesis for Water Oxidation Reaction. Acta Physico-Chimica Sinica, 2024, 40(12): 2408012-. doi: 10.3866/PKU.WHXB202408012
20. [20]
  Lirui Shen , Kun Liu , Ying Yang , Dongwan Li , Wengui Chang . Synthesis and Application of Decanedioic Acid-N-Hydroxysuccinimide Ester: Exploration of Teaching Reform in Comprehensive Applied Chemistry Experiment. University Chemistry, 2024, 39(8): 212-220. doi: 10.3866/PKU.DXHX202312035

Get Citation

PDF

XML

Metrics

PDF Downloads(70)
Abstract views(1983)
HTML views(734)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142