Patent ID: 7258932
Filing Date: 2007-08-21
Classification: C09K,H01L,Y10S

Abstract:
1. A polymeric fluorescent substance exhibiting visible fluorescence in the solid state, having polystyrene reduced number average molecular weight of 1×10 3 to 1×10 8 , and comprising repeating units of following formula (1) in the main chain, wherein Ar 1 and Ar 2 each independently represent an arylene group or a divalent heterocyclic compound group; side chain Ar 3 represents an aryl group having one or more substituents of formula (2) or represents a heterocyclic group having one or more substituents of formula (2) as nuclear substitution; X represents —CR 1 ═CR 2 — or —C≡C—; R 1 and R 2 each independently represent a group selected from a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic compound group, and cyano group; n is 0, wherein Ar 4 represents an aryl group, a monovalent heterocyclic compound group or a monovalent aromatic amine group; Y represents —CR 3 ═CR 4 — or —C≡C—; R 3 and R 4 each independently represent a group selected from a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic compound group and cyano group.