Transition metal complex compound and organic electroluminescence device using the compound

Abstract

Provided are an organic electroluminescence device having high luminous efficiency and a long emission lifetime, and a transition metal complex compound realizing the organic electroluminescence device. In the transition metal complex compound, three ligands are crosslinked with a crosslinking group having a saturated cyclic structure or a saturated polycyclic structure in a tripod manner. The organic electroluminescence device includes an organic thin film layer composed of one or multiple layers including at least a light emitting layer, the organic thin film layer being interposed between a pair of electrodes. In the organic electroluminescence device, at least one layer of the organic thin film layer contains the transition metal complex compound.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[FIG. 1] A view showing ¹H-NMR spectrum data on Metal Complex Compound 8 obtained in Example 1.

[FIG. 2] A view showing ¹³C-NMR spectrum data on Metal Complex Compound 8 obtained in Example 1.

[FIG. 3] A view showing the emission spectrum of Metal Complex Compound 8.

[FIG. 4] A view showing the X-ray crystallography of Metal Complex Compound 8.

[FIG. 5] A view showing ¹H-NMR spectrum data on Metal Complex Compound 15 obtained in Example 2.

[FIG. 6] A view showing ¹³C-NMR spectrum data on Metal Complex Compound 15 obtained in Example 2.

[FIG. 7] A view showing the emission spectrum of Metal Complex Compound 15.

Claims

1. A transition metal complex compound represented by the following general formula (1):

2. A transition metal complex compound according to claim 1, wherein the crosslinking group X comprises a cycloalkane residue.

3. A transition metal complex compound according to claim 2, wherein the crosslinking group X comprises a cyclohexane residue.

4. A transition metal complex compound according to claim 3, wherein the crosslinking group X (in a broken line) comprises the following structure (2):

5. A transition metal complex compound according to claim 4, wherein all of Ra to Ri each represent a hydrogen atom.

6. A transition metal complex compound according to claim 1, wherein at least one of L2, L4, and L6 represents a group having carbene carbon.

7. A transition metal complex compound according to claim 1, wherein L2, L4, and L6 represent a group having carbene carbon.

8. An organic electroluminescence device, comprising an organic thin film layer composed of one or multiple layers including at least a light emitting layer, the organic thin film layer being interposed between an anode and a cathode, wherein at least one layer of the organic thin film layer contains the transition metal complex compound according to claim 1.

9. An organic electroluminescence device according to claim 8, wherein the light emitting layer contains the transition metal complex compound as a light emitting material.

10. An organic electroluminescence device according to claim 8, wherein the light emitting layer contains the transition metal complex compound as a dopant.

11. An organic electroluminescence device according to claim 8, wherein: at least one of an electron injecting layer and an electron transporting layer is placed between the light emitting layer and the cathode; andat least one of the electron injecting layer and the electron transporting layer contains a n-electron-deficient, nitrogen-containing heterocyclic derivative as a main component.

12. An organic electroluminescence device according to claim 8, wherein a reducing dopant is added to an interfacial region between the cathode and the organic thin film layer.