Light-emitting device and iridium complex
A light-emitting device comprising a pair of electrodes, and organic compound layers comprising a light-emitting layer provided in between the electrodes, wherein at least one of the organic compound layers comprises a compound having a transition metal atom-phosphorus atom bond.
1 . A light emitting device comprising:
a pair of electrodes; and
organic compound layers comprising a light-emitting layer provided in between the electrodes,
wherein at least one of the organic compound layers comprises a compound having a transition metal-phosphorus atom bond, and
wherein the compound having a transition metal-phosphorus atom bond is represented by formula (1):
wherein M 1 represents rhodium (III), tungsten (O), or rhenium (I), R 1 represents a hydrogen atom or a substituent, L 1 represents a ligand, X 1 represents a counter ion, n 1 represents 2 or 3, n 2 represents an integer of 1 to 8, n 3 represents an integer of 0 to 8, n 4 represents an integer of 0 to 6, when at least one of n 1 , n 2 , n 3 and n 4 is more than one, R 1 groups, (R 1 ) n1 —P ligand, L 1 ligands or X 1 ions are each the same or different.
2 . The light-emitting device according to claim 1 , wherein at least one of R 1 represents a heteroaryl group.
3 . The light-emitting device according to claim 1 , wherein at least one of R 1 represents a heteroaryloxy group.
4 . The light-emitting device according to claim 1 , wherein at least one of R 1 represents a substituted amino group.
5 . The light-emitting device according to claim 1 , wherein a plurality of R 1 combine with each other to form a cyclic structure.
6 . The light-emitting device according to claim 1 , wherein a plurality of R 1 combine with each other to form a phosphinine ring.
7 . The light-emitting device according to claim 1 , wherein at least one of R 1 represents an alkoxy group.
8 . The light-emitting device according to claim 1 , wherein at least one of R 1 represents an aryloxy group.