Patent ID: 8178214

Claim:
An organic electroluminescence element material comprising a platinum complex having a platinum ion and a ligand comprising an aryl group of which free rotation is blocked or an aromatic heterocycle group of which free rotation is blocked, wherein the platinum complex is an ortho-metallated complex, wherein the ortho-metallated complex is selected from the group consisting of a platinum complex represented by Formula (7) or a tautomer of a compound represented by Formula (7); and a platinum complex represented by Formula (8) or a tautomer of a compound represented by Formula (8): wherein R 23 and R 24 each represent a hydrogen atom or a substituent selected from following Group A; Z 5 represents a group of atoms necessary to form an aromatic heterocycle containing a nitrogen atom; n7 represents an integer of 1 or 2, provided that, when n7 is 1, L7 represents a bidentate ligand; p8 represents an integer of 0-3; and q6 represents an integer of 0-4, wherein R 25 and R 26 each represent a hydrogen atom or a substituent selected from following Group A; Z 6 represents a group of atoms necessary to form an aromatic heterocycle containing a nitrogen atom; n8 represents an integer of 1 or 2, provided that, when n8 is 1, L8 represents a bidentate ligand; p9represents an integer of 0-3; and q7 represents an integer of 0-4, Group A: an alkyl group, a trifluoromethyl group, an aryl group and an aromatic heterocycle group, wherein these groups may further be substituted.