A nitrogen-containing heterocyclic compound represented by the following formula (I):
1
wherein X
1
and X
2
each represent an electron attractive group such as a cyano group; and the rings Z
1
and Z
2
each represent a hydrocarbon ring or a heterocycle (e.g., benzene ring having an electron donative group such as hydroxyl group, an alkoxy group, amino group and an N-substituted amino group, or a condensed ring being a benzene ring condensed with a heterocycle having a nitrogen atom as a hetero atom) is provided. An organic EL device is obtained by allowing an organic layer containing the compound described-above to be interposed between a pair of electrodes. The present invention provides a nitrogen-containing heterocyclic compound useful as a functional material and a process for producing the same, and an organic EL device using the same.
The azepine compound capable of emitting a light by light-irradiation or action of an electric field is represented by the following formula (I) or (II):
1
wherein X
1
and X
2
are the same or different, each representing an electron attractive group; R
1
represents a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, or an alkoxy group; R
2
represents an amino group or an N-substituted amino group, or, in the formula (I), R
2
bonds a carbon atom adjacent to a ring Z to form a ring; and the ring Z represents a hydrocarbon ring which may have a substituent or a heterocycle which may have a substituent.
The compound is useful as a functional material, thus, an organic electroluminescence device can be obtained by interposing an organic layer composed of the above compound between a pair of electrodes.