A polymer compound comprising a constitutional unit represented by the formula (1): in the formula, Ar1 represents an aromatic hydrocarbon group or an aromatic heterocyclic group, E represents a group obtained by removing one hydrogen atom in a compound represented by the formula (2): in the formula, R1 to R10 represents a hydrogen atom, an alkyl group, an aryl group, a monovalent aromatic heterocyclic group or a group represented by —O—RA, RA represents an alkyl group, an aryl group or a monovalent aromatic heterocyclic group, and aa is an integer of 1 or more.