| 摘要 |
A polymer containing triazine rings that has a molecular weight of 5,000 - 1,000,000 and that comprises a recurring unit represented by the general formula (I): <CHEM> wherein X<1> and X<2> are each independently S, NR<1> (R is a hydrogen atom, an alkyl group or an aryl group) or O; Y may be an alkylene group, a divalent substituted or unsubstituted aromatic ring group that do not contain chromophore moieties or a group in which said aromatic ring groups are bonded or condensed together; Z is either a spacer group comprising a group represented by -G-(CH2)n- (n is an integer of 1 - 10) or a direct bond (G is S, NR<4> or O, and R<4> is a hydrogen atom, an alkyl group or an aryl group); and A is an organic chromophore moiety in which an electron donative group and an electron attractive group are conjugated via a pi -electron system. The polymer is lightproof, forms a thin film of high quality and has a high glass transition point.
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