| abstract |
The present invention provides an optical film which is obtained through polymerizing the compound comprising the group represented by formula (A) and at least one polymeric group. (In the formula, A represents the bivalent group of at least one aromatic ring selected from aromatic hydrocarbon ring and aromatic heterocycle. The summation of pi electrons of aromatic ring contained in the bivalent group is more than 12. Da and Db represent single bond, -CO-O-, -O-CO-, -C(=S)-O-, -O-C(=S)-, -CR<1>R<2>-, -CR<1>R<2>-CR<3>R<4>-, -O-CR<1>R<2>-, -CR<1>R<2>-O-, -CR<1>R<2>-O-CR<3>R<4>-, -CR<1>R<2>-O-CO-, -O-CO-CR<1>R<2>-, -CR<1>R<2>-O-CO-CR<3>R<4>-, -CR<1>R<2>-CO-O-CR<3>R<4>-, -NR<1>-CR<2>R<3>-, -CR<2>R<3>-NR<1>-, -CO-NR<1>- or NR<1>-CO- independently from each other. Ga and Gb represent bivalent alicyclic alkyl). |