Organic metal complex, and organic light emitting device and display apparatus using the same

1. A luminescent material comprising:

an organic metal complex having a structure represented by the following general formula (1):

ML m L′ n   (1)

wherein L and L′, which are different from each other, each represent a bidentate ligand; wherein m represents an integer of 1 to 3 and n represents an integer of 0 to 2, provided that m+n is 3;

wherein M represents Ir;

wherein the partial structure ML m has a structure represented by the following general formula (8):

wherein the benzene ring with R 41 -R 44 attached thereto in the formula (8) is further represented by any one of the following formulae:

wherein *1 shows the connection to the Ir;

wherein *2 shows the connection to the benzo[f]isoquinoline ring represented in the formula (8);

wherein R 88 to R 102 , which may be identical to or different from each other, each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted aralkyl group, an amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group;

wherein the partial structure ML′ n has a structure represented by any one of the following general formulae (10) to (12):

wherein R 45 to R 52 , which may be identical to or different from each other, each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted aralkyl group, an amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and R 47 and R 48 may be bonded to form a benzene ring that is fused with the benzo[f]isoquinoline ring represented in the formula (8); and

wherein R 65 to R 79 , which may be identical to or different from each other, each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, an alkoxy group, an aralkyl group, a substituted amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and adjacent substituents among R 65 to R 68 may be bonded to form a ring that is fused with the benzene ring represented in the formula (10), and adjacent substituents among R 77 to R 79 may be bonded to form a ring that is fused with the backbone represented in the formula (12).

2. The luminescent material according to claim 1 , wherein the luminescent material is a material for an organic light emitting device.

3. An ink comprising a solvent and the luminescent material according to claim 2 .

4. The ink according to claim 3 further comprising a binder resin.

5. The ink according to claim 3 further comprising at least one of an oligomer and a polymer material.

6. The ink according to claim 4 , wherein the binder resin is selected from the group consisting of a polyvinylcarbazole resin, a polycarbonate resin, a polyester resin, an ABS resin, an acrylic resin, a polyimide resin, a phenol resin, an epoxy resin, a silicone resin, and a urea resin.

7. The ink according to claim 6 , wherein the binder resin comprises at least two resins.

8. The ink according to claim 6 further comprising at least one of a plasticizer, an antioxidant, and a UV absorber.

9. The ink according to claim 3 further comprising at least one of a plasticizer, an antioxidant, and a UV absorber.