HOLE TRANSPORT MATERIALS CONTAINING TRIPHENYLENE

• US 20110180786A1
• Filed: 06/30/2009
• Published: 07/28/2011
• Est. Priority Date: 06/30/2008
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Kwong, Raymond, Xia, Chuanjun
• Granted Patent: US 8,440,326 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: C07C 211/55 Diphenylamines
• CPC Class Codes: C07C 2603/28 Phenalenes; Hydrogenated phenalenes
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1011 Condensed systems
• CPC Class Codes: C09K 2211/1014 bridged by heteroatoms, e.g. N, P, Si or B
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 50/14 Carrier transporting layers
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/622 containing four rings, e.g. pyrene
• CPC Class Codes: H10K 85/633 comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom

Abstract

Novel materials are provided, having a single phenyl or chain of phenyls where there is a nitrogen atom on each end of the single phenyl or chain of phenyls. The nitrogen atom may be further substituted with particular triphenylene groups. Organic light-emitting devices are also provided, where the novel materials are used as a hole transport material in the device. Combinations of the hole transport material with specific host materials are also provided.

Claims

1. A composition of matter having the chemical structure:

2. The composition of matter of claim 1, wherein the part of the composition represented by Formula I is more specifically:

3. The composition of matter of claim 1, wherein at least one of R₁, R₂, R₃ and R₄ is:

4. The composition of matter of claim 1, wherein at least one of R₁, R₂, R₃ and R₄ is:

5. The composition of matter of claim 1, wherein at least one of R₁, R₂, R₃ and R₄ is:

6. The composition of matter of claim 1, wherein at least one of R₁, R₂, R₃ and R₄ is selected from the group consisting of:

7. The composition of matter of claim 1, wherein each of R₁, R₂, R₃ and R₄ is independently selected from the group consisting of:

8. The composition of matter of claim 3, wherein the composition of matter has a structure selected from the group consisting of:

9. The composition of matter of claim 8, wherein the composition of matter has the structure:

10. The composition of matter of claim 8, wherein the composition of matter has the structure:

11. The composition of matter of claim 4, wherein the composition of matter has a structure selected from the group consisting of:

12. The composition of matter of claim 5, wherein the composition of matter has a structure selected from the group consisting of:

13. The composition of matter of claim 12, wherein the composition of matter has the structure:

14. An organic light emitting device comprising:

an anode;

a cathode;

an organic emissive layer, disposed between the anode and the cathode, the organic emissive layer further comprising a host and a phosphorescent dopant,

an organic hole transport layer comprising a hole transport material, disposed between the organic emissive layer and the anode, and in direct contact with the organic emissive layer;

wherein the hole transport material has the structure;

15. The device of claim 14, wherein the dopant is an organo-metallic iridium material.

16. The device of claim 14, wherein at least one of R₁, R₂, R₃ and R₄ is:

17. The device of claim 14, wherein at least one of R₁, R₂, R₃ and R₄ is:

18. The device of claim 14, wherein the host is a compound comprising a triphenylene containing benzo-fused thiophene.

19. The device of claim 18, wherein the host is:

20. The device of claim 14, wherein the host is an aryltriphenylene compound.

21. The device of claim 20, wherein the host is:

22. A consumer product, wherein the consumer product includes an organic light emitting device that further includes a composition of matter having the chemical structure: