Organic el device

An organic EL device comprising:

• an anode;
• a cathode;
• and
• one or more organic thin film layers including a light emitting layer adjacent to said anode and said cathode,
• wherein at least one of the said organic thin film layers contains a compound represented by the following formula (1):
• 39
• and wherein Ar1 represents a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted aromatic heterocyclic group;
• Y represents a single bound or methylene group;
• Z represents a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted aromatic heterocyclic group;
• R1 and R2 represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted aromatic heterocyclic group;
• any two of Z, R1 and R2 may form a ring;
• R3 to R6 each indenpendently represents a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted amino group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted aromatic heterocyclic group;
• and R4 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted aromatic heterocyclic group