聚酰亚胺取向膜是液晶显示器的重要组成部分,对显示器件性能具有重要影响.通过实验室自行合成的两种不同侧链的二胺单体,与4,4'-二胺基二苯甲烷和均苯四羧酸二酐聚合得到含有酯键型侧链和含有醚键型侧链结构的两种聚酰亚胺.通过偏光显微镜观察,液晶分子在两种聚酰亚胺取向膜上都获得了均匀取向.测试了不同侧链结构的聚酰亚胺取向膜产生的预倾角,发现含有酯键型侧链结构的聚酰亚胺比含有醚键型侧链结构的聚酰亚胺产生的预倾角略大,且取向稳定性更好.
参考文献
| [1] | Liu J G,Li Z X,Wu J T.New liquid-crystal alignment agents based on fluorinated polyimides with trifluoromethylsubstituted benzene or diphenylether in the side chain[J].J.Polym.Sci.Part A:Polym.Chem.,2002,40(10):1583-1593. |
| [2] | Neuber C,Giesa R,Schmidt H W.Influence of chain stiffness and preparation methods on the efficiency of polyimide alignment layers for liquid crystal orientation[J].Mol.Cryst.Liq.Cryst.,2006,461(1),83-99. |
| [3] | Chae B,Kim S B,Lee S W,et al.Surface morphology,molecular reorientation,and liquid crystal alignment properties of rubbed nanofilms of a well-defined brush polyimide with a fully rodlike backbone[J].Macromolecules,2002,35(27):10119-10130. |
| [4] | 李凌,郭晓霞.高预倾角液晶显示器用聚酰亚胺定向材料的研究(Ⅱ)[J].功能材料,2001,32(3):327-329. |
| [5] | 魏怀鹏,李艳龙,叶文江,等.聚酰亚胺静电损伤和取向作用失效的系统观测[J].液晶与显示,2006,21(4):320-323. |
| [6] | 白星,王宇,汪映寒.聚酰亚胺制备条件对液晶预倾角的影响[J].液晶与显示,2007,22(3):268-272. |
| [7] | Lee Y J,Kim Y W,Du H J,et al.Synthesis and characterization of novel polyimides with 1-octadecyl side chains for liquid crystal alignment layers[J].Polym.Advan.Technol.,2007,18(3):226-234. |
| [8] | 张俊瑞,马志华,刘绍锦,等.预倾角对超扭曲向列相液晶显示的影响[J].液晶与显示,2006,21(2):145-146. |
| [9] | Lee Y J,Choi J G,Song I,et al.Effect of side.chain structure of polyimides on a pretih angle of liquid crystal cells[J].Polymer,2006,47(5):1555-1562. |
| [10] | Lee C,Woo T H,Lee M.Effect of curing temperature on pretih angles of polyimide alignment layer[J].Mol.Cryst.Liq.Cryst.,2004,425(1):467-473. |
| [11] | Ge J J,Li c Y,Xue G,et al.Rubbing-induced molecular reorientation on an alignment surface of an aromatic polyimide containing cyanobiphenyl side chains[J].J.Am.Chem.Soc.,2001,123(24):5768-5776. |
| [12] | 今井淑夫,横田力男.聚酰亚胺的基础和应用[M].日本:NTS lnc.,2002:263. |
| [13] | Park J H,Sohn B H,Jung J C.et al.Synthesis and characterization of novel polyimides bearing a side chain composed of stilbene mesogen and undecyl spacer and the alignment ability of nematic liquid-crystal molecules[J].J.Polym.Sci.Part A:Polym.Chem.,2001,39(10):1800-1809. |
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