Patent ID: 7316851

Claim:
An electroluminescent material represented by the following Formula B1: wherein Ar 41 and Ar 42 are each independently an aryl group or an aromatic heterocyclic group; L 11 , L 12 and L 13 is each an atom or a group of atoms necessary to form an aromatic 5-membered heterocyclic ring, provided that at least one of L 11 , L 12 and L 13 is ═N—, —N(R 41 )—, —S— or —O—, in which R 41 is a hydrogen atom or a substituent, provided that at least two of Ar 41 , Ar 42 and R 41 are each a biaryl group having a bond capable of giving an internal rotational isomerism or a group comprising the biaryl group, provided that adjacent substituent groups existing in the molecule represented by formula B1 may be condensed with each other to form a ring.