Patent ID: 6696180
Filing Date: 2004-02-24
Classification: C08G,C09K,H01L,Y10S

Abstract:
A polymeric fluorescent substance which emits fluorescence in solid state, has a polystyrene-reduced number-average molecular weight of 103 to 108 and contains one or more repeating units represented by the following formula (1) in main chain, wherein 0.05 to 10 mol % repeating units of all repeating units contained in the polymeric fluorescent substance have branching polymeric chains: in the formula, Ar1 is a group selected from the group consisting of an arylene group having 6 to 60 carbon atoms, a heterocyclic compound group having 4 to 60 carbon atoms and a group containing a metal complex having, as a ligand, one or more organic compounds containing 4 to 60 carbon atoms; Ar1 may have one or more substituents; each of R1 and R2 independently represents a group selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 20 carbon atoms, aryl groups having 6 to 60 carbon atoms, heterocyclic compound groups having 4 to 60 carbon atoms and a cyano group; and n is 0 or 1.