ORGANIC ELECTROLUMINESCENT DEVICE

• US 20100171111A1
• Filed: 01/06/2010
• Published: 07/08/2010
• Est. Priority Date: 01/07/2009
• Status: Active Grant

• Current Assignee: UDC Ireland Limited
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: TAKADA, Saki, MURAKAMI, Takeshi, YAGI, Kazunari, FUKUZAKI, Eiji
• Granted Patent: US 9,193,747 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: C07F 15/0086 Platinum compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/346 comprising platinum

Abstract

An organic electroluminescent device is provided and includes: a pair of electrodes; and a light emitting layer between the electrodes. The organic electroluminescent device has a layer containing a compound represented by formula (I).

L represents a divalent linking group, Q₁ and Q₂ each independently represents an aromatic or aliphatic heterocycle coordinated to Pt through a nitrogen atom, X₁ represents a 6-membered ring containing one or more nitrogen atoms, Q₁, Q₂, and X₁ each independently may have a substituent, X₂ represents a sulfur atom, a phosphorus atom, an oxygen atom, or a nitrogen atom, and X₃ represents a carbon atom, a sulfur atom, or a phosphorus atom.

Claims

1. An organic electroluminescent device comprising:

a pair of electrodes; and

a light emitting layer between the electrodes,

wherein the organic electroluminescent device has a layer containing a compound represented by formula (I);

2. The organic electroluminescent device according to claim 1, wherein the compound represented by formula (I) is a compound represented by formula (II):

3. The organic electroluminescent device according to claim 1, wherein the compound represented by formula (I) is a compound represented by formula (III):

4. The organic electroluminescent device according to claim 1, wherein the compound represented by formula (I) is a compound represented by formula (IV):

5. The organic electroluminescent device according to claim 1, wherein the layer containing the compound represented by formula (I) is the light emitting layer.

6. The organic electroluminescent device according to claim 1, wherein the light emitting layer contains a host material.

7. The organic electroluminescent device according to claim 6, wherein the host material is a compound represented by formula (V):

8. The organic electroluminescent device according to claim 1, wherein the light emitting layer contains a compound represented by formula (VI):

9. The organic electroluminescent device according to claim 3, wherein the L represents an alkylene group, an arylene group, a heteroarylene group, an imino group, an oxy group, a thio group, a phosphinidene group, or a silylene group.

10. The organic electroluminescent device according to claim 3, wherein L represents an arylimino group or —

CR₁′

R₂′

—

, wherein R₁′ and

R₂′

each represents an alkyl group, an alkyl halide group, or an aryl group.

11. The organic electroluminescent device according to claim 3, wherein L represents a phenylimino group, a 3,5-di-tert-butylphenylimino group, or —

CR₁′

R₂′

—

, wherein R₁′ and

R₂′

each represents an alkyl group, an alkyl halide group, or an aryl group.

12. The organic electroluminescent device according to claim 3, wherein R₁ and the R₂ each independently represents a halogen atom, an alkylamino group, an aryl group, or an alkyl group.

13. The organic electroluminescence device according to claim 3, wherein R₃ represents a halogen atom.

23. A light emitting apparatus comprising an organic electroluminescent device according to claim 1.

24. An illumination apparatus comprising an organic electroluminescent device according to claim 1.

25. The organic electroluminescent device according to claim 1, wherein at least one layer between the pair of electrodes is manufactured by a coating method.

14. A compound represented by formula (III):

15. The compound according to claim 14, wherein the compound represented by formula (III) is represented by formula (IV):

16. The compound according to claim 14, wherein L represents an alkylene group, an arylene group, a heteroarylene group, an imino group, an oxy group, a thio group, a phosphinidene group, or a silylene group.

17. The compound according to claim 14, wherein L represents an arylimino group or —

CR₁′

R₂′

—

, wherein R₁′ and

R₂′

each represents an alkyl group, an alkyl halide group, or an aryl group.

18. The compound according to claim 14, wherein L represents a phenylimino group, a 3,5-di-tert-butylphenylimino group, or —

CR₁′

R₂′

—

, wherein R₁′ and

R₂′

each represents an alkyl group, an alkyl halide group, or an aryl group.

19. The compound according to claim 14, wherein R₁ and the R₂ each independently represents a halogen atom, an alkylamino group, an aryl group, or an alkyl group.

20. The compound according to claim 14, wherein R₃ represents a halogen atom.

21. A light emitting material comprising a compound according to claim 14.

22. A light emitting layer comprising a compound according to claim 14 as a light emitting material.