Organic electroluminescent device

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 R1 to R4 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 R1 to R4 is a di-aryl amino group represented with —NAr1Ar2 where each of Ar1 and Ar2 independently indicates an aryl group having a carbon number of 6 to 20 both inclusive,
• wherein R5 to R12 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 R1 to R4 except said diaryl amino group and R5 to R12 form a ring.