Polymer compound and polymer light-emitting device using the same

A polymer compound having a polystyrene reduced number average-molecular weight of 103-108, and comprising at least one repeating unit represented by formula (2),

• wherein Ar5, Ar6, Ar7, Ar8, Ar9, Ar10 and Ar11 each independently represent an arylene group or a divalent heterocyclic group;
• E4, E5, E6, E7, E8 and E9 each independently represent an aryl group (A′) represented by the below formula (3),
• wherein Re and Rf each independently represent alkyl, alkoxy or alkylthio groups having three or less carbon atoms, and Rg represents alkyl, alkoxy or alkylthio groups having 3-20 carbon atoms;
• l and n each independently represent an integer of 1 or 2;
• m represents an integer of 0 to 2;
• o and p each independently represent an integer of 0 or 1, and l+m+n+o+p is 2 or more, and
• a repeating unit represented by below formula 36, 37, 38, 88, 89 or 90
• wherein Rs each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an alkylthio group or an aryl group.