Polymer compound and electroluminescent element

A polymer compound having a main chain and at least one side chain wherein at least one of said side chain comprises a partial structure represented by the general formula (1):

• wherein R1 is (a) a linear or branched alkylene group having 2 to 15 carbon atoms in which only a single methylene group or two or more non-adjacent methylene groups may be substituted with —O—, —S—, —CO—, —CO—O—, —O—CO—, —CH═CH—, or —C≡C—, and in which a hydrogen atom of said alkylene group is optionally substituted by a fluorine atom, or (b) an aromatic ring group optionally substituted with a halogen atom, a cyano group, a nitro group or a linear or branched alkyl group having 1 to 20 carbon atoms in which only a single methylene group or two or more non-adjacent methylene groups are optionally substituted with —O—, —S—, —CO—;
• —CO—O—, —O—CO—, —CH═CH—, or —C≡C—, and a hydrogen atom of the alkyl group is optionally substituted with fluorine atom;
• M is Ir;
• L and L′ are different and are each a ligand coordinatable with a metal, wherein L′ comprises a partial structure represented by the formula:
• and n is 1 or 2.