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	一种带肉桂酸酯基的聚酰亚胺液晶光定向材料研究
	夏庆玲 ; 于海峰 ; 连彦青 ; 王晓工 ; XIA Qingling ; YU Haifeng ; LIAN Yanqing ; WANG Xiaogong
	2010-06-10 ; 2010-06-10
关键词	光定向层 聚酰亚胺 线性偏振光聚合 二向色性 Photo-alignment layer,Polyimide,Linearly polarized polymerization(LPP),Photodichroism O633.2
其他题名	CINNAMATE_CONTAINING POLYIMIDE AND ITS FUNCTION AS LIQUID CRYSTAL PHOTOALIGNMENT LAYER
中文摘要	利用双酚A二胺单体(BISDA)与4,4-′(六氟异丙基)-双邻苯二甲酸酐(6FDA)的缩聚反应,制备了含有侧羟基的先驱聚合物PI-OH.通过PI-OH与肉桂酰氯的官能化反应,得到接有肉桂酸酯感光侧基的双酚A型聚酰亚胺PI-CI.用红外光谱(FTIR)、氢核磁共振(1H-NMR)分析、热分析(DSC)等方法表征了上述聚合物的结构和热性能.利用紫外-可见光谱(UV-Vis)对PI-CI的感光性能进行了研究.在线偏振紫外光辐照下,上述聚合物膜表现出二色向性.二向色性的强弱随光照能量的变化存在最大值.经线性偏振紫外光(LPUV)辐射后的PI-CI薄膜能诱导液晶盒中液晶分子发生均匀的定向沿面排列.上述实验表明,该聚酰亚胺是一类具有优良性能的潜在液晶光定向材料.; The precursor polymer PI-OH was prepared by the polycondension of bisphenol-A diamine monomer(BISDA) and a dianhydride monomer(6FDA) in solution.Then cinnamoyl chloride was reacted with the hydroxyl-containing precursor to prepare the photosensitive polymer PI-CI with cinnamate pendant groups.The polymers were characterized by FTIR,()~1H-NMR and differential scanning calorimetry(DSC).The photochemical properties of PI-CI were studied by using UV-Vis and FTIR.The polymer showed significant photodichroism upon UV irradiation due to the photodimerization.After processed by Linear Polarized Polymerization(LPP),the spin-coated films of PI-CI were used as photo-alignment layers to assemble sandwich-type liquid crystal cells via a capillary action using a nematic liquid crystal 5CB.The observation by polarized microscope showed that the PI-CI photo-alignment layers had the ability to align LC molecules in a very uniform way.The photosensitive polymer PI-CI of bisphenol-A is promising for the application as photo-alignment layer for liquid crystal displays.; 国家自然科学基金资助项目(基金号50103005);
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/61262]
专题	清华大学
推荐引用方式 GB/T 7714	夏庆玲,于海峰,连彦青,等. 一种带肉桂酸酯基的聚酰亚胺液晶光定向材料研究[J],2010, 2010.
APA	夏庆玲.,于海峰.,连彦青.,王晓工.,XIA Qingling.,...&WANG Xiaogong.(2010).一种带肉桂酸酯基的聚酰亚胺液晶光定向材料研究..
MLA	夏庆玲,et al."一种带肉桂酸酯基的聚酰亚胺液晶光定向材料研究".(2010).

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