Patent ID: 8519092

Claim:
A polymer compound having a polystyrene reduced number average-molecular weight of 10 3 -10 8 , and comprising at least one repeating unit represented by formula (2), wherein Ar 5 , Ar 6 and Ar 7 each independently represent an arylene group or a divalent heterocyclic group; E 8 and E 9 each independently represent an aryl group represented by the below formula (3), wherein Re, Rf, and Rg each independently represent an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group or an arylalkynyl group.