ORGANIC ELECTROLUMINESCENCE DEVICE
An organic electroluminescent device includes a pair of electrodes; and an organic layer between the pair of electrodes, which comprises a light-emitting layer and contains a compound represented by the following formula (1): wherein each of R 1 to R 8 independently represents a hydrogen atom or a substituent, A represents an aromatic ring which may have a substituent, m represents an integer of 2 or greater, and n represents an integer of 1 or greater.
1 . An organic electroluminescent device comprising:
a pair of electrodes; and
an organic layer between the pair of electrodes, which comprises a light-emitting layer and contains a compound represented by the following formula (I):
wherein
each of R 1 to R 8 independently represents a hydrogen atom or a substituent,
A represents an aromatic ring which may have a substituent,
m represents an integer of 2 or greater, and
n represents an integer of 1 or greater.
2 . The organic electroluminescence device according to claim 1 , wherein
each of R 1 to R 8 independently represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a silyl group, or a halogen atom.
3 . The organic electroluminescence device according to claim 1 , wherein
A represents an aromatic ring,
m represents an integer of 2 to 5,
n represents an integer of 1 to 4, and
each of R 1 to R 8 independently represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a silyl group, or a halogen atom.
4 . The organic electroluminescence device according to claim 1 , wherein
the compound represented by the formula (I) is represented by the following
wherein
each of R 1a to R 8a independently represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a silyl group, or a halogen atom
m a represents an integer of 2 to 5.
n a represents an integer of 1 to 4, and
Z represents a carbon atom or a nitrogen atom, provided that when Z is unsubstituted, Z represents C—H or N.
5 . The organic electroluminescence device according to claim 1 , wherein
A represents a benzene ring,
m represents an integer of 2 to 5,
n represents an integer of 1 to 4, and
m+n represents an integer of 3 to 6.
6 . The organic electroluminescence device according to claim 1 , wherein
the compound represented by the formula (I) is contained in the light emitting layer.
7 . The organic electroluminescence device according to claim 1 , wherein
the compound represented by the formula (I) is contained in a layer adjacent to the light emitting layer.
8 . The organic electroluminescence device according to claim 1 , wherein
the light emitting layer contains at least one of a platinum complex phosphorescent material and an iridium complex phosphorescent material.
9 . The organic electroluminescence device according to claim 1 , wherein
the light emitting layer contains a platinum complex phosphorescent material having a tetradentate ligand.