| abstract |
It is a copolymer which has 2 or more types of repeating units selected from the group which consists of an arylene group, a divalent heterocyclic group, and a divalent aromatic amine group, A monovalent heterocyclic group and a heterocyclic coordination metal complex in at least one of the molecular chain terminal of the said copolymer. Having an aromatic terminal group selected from the group consisting of a monovalent group derived from a monovalent aromatic amine group and an aryl group having a formula weight of 90 or more, having fluorescence in a solid state, and having a weight average molecular weight in terms of polystyrene of 10 3 to 10 8 Phosphorus copolymer.n n n Copolymer, polymer light emitting device |