Patent ID: 7705174

Claim:
A condensed polycyclic π-conjugated organic material, being a polymer comprising a compound of formula (4) as a repeating unit and having a number average polystyrene-equivalent molecular weight of 10 3 to 10 8 : where each of R 1 and R 2 , independent from the other, is a hydrogen atom, 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, an arylalkynyl group, an amino group, a substituted amino group, a silyl group, a substituted silyl group, a silyloxy group, a substituted silyloxy group, a monovalent heterocyclic group, a fluorinated alkyl group, or a halogen atom; R 4 is a substituent having ortho position activating effect, such as an alkoxy group, an aryloxy group, an arylalkoxy group, an amino group, a substituted amino group, a substituted silyl group, a substituted silyloxy group, a halogen atom, a trifluoromethyl group, a carbamoyl group, a substituted carbamoyl group, an imino group, a substituted imino group, an oxazoridyl group, an aminoalkyl group, an alkoxyalkyl group, a sulfo group, a substituted sulfo group, a substituted sulfamoyl group, a phosphoric ester group, a cyano group, an aryl group, or an ethynyl group; and m is from 0 to 50.