Carbazole compound and organic light-emitting device using same

A carbazole compound represented by the general formula (1):

• wherein Ar represents a substituted or unsubstituted bipyridine group, a substituted or unsubstituted terpyridine group, or a substituted or unsubstituted 4,5-diazafluorene group and is bonded to any of the eight available carbon atoms on the carbazole skeleton;
• R1, R2, R3, R4, R5, R6, R7, and R8, when bonded to the available carbon atoms other than the Ar-bonded carbon atom(s) on the carbazole skeleton, and R9 each represent, independently of one another, a hydrogen atom, a substituted or unsubstituted alkyl group, an aralkyl group, an alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted amino group, a cyano group, or a halogen group, or adjacent ones of R1, R2, R3, R4, R5, R6, R7, R8, and R9 may be joined to form a ring;
• and
• n represents an integer of 1 to 4.