Patent ID: 8795848

Claim:
A compound for an organic electroluminescent device represented by the following general formula (1): wherein ring a is an aromatic or heterocyclic ring fused to two adjacent rings and represented by formula (a1), and ring b is a heterocyclic ring fused to two adjacent rings and represented by formula (b1); X is CR or N; L is an aromatic heterocyclic group of a fused-ring structure with a valence of (n+1); Ar 1 and Ar 3 each is independently an alkyl group, an aralkyl group, or a C 6 -C 15 substituted or unsubstituted aromatic hydrocarbon or C 3 -C 15 substituted or unsubstituted aromatic heterocyclic group and Ar 3 is never a nitrogen-containing six-membered ring; R and R 1 to R 5 each is independently hydrogen, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, a cyano group, a nitro group, an alkoxyl group, an alkylsulfonyl group, a haloalkyl group, a hydroxyl group, or a substituted or unsubstituted aromatic hydrocarbon group; and n is an integer of 0-5.