申请人:Ootsuki Daisuke
公开号:US08450517B2
公开(公告)日:2013-05-28
The invention is to provide a photosensitive compound suitable for a photoalignment method, a photosensitive polymer prepared from the compound, a photoaligning agent by using the compound and a liquid crystal alignment film prepared from the photoaligning agent. A photosensitive compound represented by formula (1):
in formula (1), Y1 is a divalent group represented by formula (2-1) or (2-2); A1 is 1,4-phenylene or 1,4-cyclohexylene; Z1 is a single bond, —COO— or —OCO—; R1 and R2 are each independently hydrogen, fluorine or alkyl having 1 to 5 carbons; Q1 is independently a single bond or alkylene having 1 to 12 carbons; and n is 0 or 1. In formulas (2-1) and (2-2), W1 and W2 are each independently hydrogen, alkyl having 1 to 3 carbons or alkoxy having 1 to 3 carbons.
该发明提供了一种适用于光调向方法的光敏化合物,由该化合物制备的光敏聚合物,利用该化合物制备的光调向剂以及由光调向剂制备的液晶取向膜。一种由式(1)表示的光敏化合物:在式(1)中,Y1是由式(2-1)或(2-2)表示的二价基团;A1是1,4-苯撑基或1,4-环己撑基;Z1是单键,—COO—或—OCO—;R1和R2分别独立地是氢,氟或具有1至5个碳原子的烷基;Q1独立地是单键或具有1至12个碳原子的烷基;n为0或1。在式(2-1)和(2-2)中,W1和W2分别独立地是氢,具有1至3个碳原子的烷基或具有1至3个碳原子的烷氧基。