Polymeric fluorescent substance and polymer light-emitting device using the same

摘要

A polymeric fluorescent substance exhibiting fluorescence in the solid state, having a polystyrene reduced number-average molecular weight of 1 x 10<3> to 1 x 10<8>, and comprising one,or more repeating units of formula (1) and one or more repeating units of formula (8): -Ar1-(CR1=CR2)n- -Ar2-(CR36=CR37)n- wherein Ar1 represents a specific arylene or a divalent heterocyclic compound group, and Ar2 represent an arylene or a divalent heterocyclic compound group other than Ar1. By using the polymeric fluorescent substance, a high performance polymer LED can easily be obtained.