Patent ID: 7125614

Claim:
An electroluminescent device comprising: an anode; a cathode; and at least one organic layer sandwiched between said anode and said cathode, said organic layer including at least a light emitting layer, said organic layer containing a compound represented with the chemical formula C1, alone or in combination: wherein R 1 to R 4 each independently represents a hydrogen atom, a hydroxyl group, a substituted or unsubstituted amino group, a nitro group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted aralkyl group, wherein at least one of R 1 to R 4 is a di-aryl amino group represented with —NAr 1 Ar 2 where each of Ar 1 and Ar 2 independently indicates an aryl group having a carbon number of 6 to 20 both inclusive, wherein R 5 to R 12 each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, a substituted or unsubstituted amino group, a nitro group, a cyano group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted alkoxycarbonyl group, or a carboxyl group, and wherein any two of R 1 to R 4 except said diaryl amino group and R 5 to R 12 form a ring.