Organic electroluminescent materials and devices

• US 9,553,274 B2
• Filed: 07/16/2013
• Issued: 01/24/2017
• Est. Priority Date: 07/16/2013
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Xia, Chuanjun, Joseph, Scott
• Primary Examiner(s): CLARK, GREGORY D
• Application Number:
  US13/942,921
• Publication Number:
  US 20150021556A1
• Time in Patent Office: 1,288 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: C07D 491/04 Ortho-condensed systems
• CPC Class Codes: C07D 495/04 Ortho-condensed systems
• CPC Class Codes: C09B 57/00 Other synthetic dyes of known constitution
• CPC Class Codes: H10K 85/657 Polycyclic condensed heteroaromatic hydrocarbons
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole

Abstract

The present disclosure generally relates to novel compounds containing carbazole and triazine with different number of phenyl units attached to its core. In particular, the disclosure relates to compositions and/or devices comprising these compounds as hosts for PHOLEDs.

Claims

1. A compound having a structure according to Formula I

2. The compound of claim 1, wherein R¹ is aryl or heteroaryl.

3. The compound of claim 1, wherein R¹ is selected from the group consisting of phenyl, biphenyl, terphenyl, tetraphenyl, pentaphenyl, pyridine, phenyl pyridine, pyridyl phenyl, triphenylene, carbazole, fluorene, dibenzofuran, dibenzothiophene, dibenzoselenophene and combinations thereof.

4. The compound of claim 1, wherein R², R³, R⁴, R⁵ and R⁶ are each independently selected from the group consisting of hydrogen, deuterium, aryl, heteroaryl and combinations thereof.

5. The compound of claim 1, wherein R², R³, R⁴, R⁵ and R⁶ are each independently selected from the group consisting of hydrogen, deuterium, phenyl, biphenyl, terphenyl, tetraphenyl, pentaphenyl, pyridine, phenyl pyridine, pyridyl phenyl, triphenylene, carbazole, fluorene, dibenzofuran, dibenzothiophene, dibenzoselenophene and combinations thereof.

6. The compound of claim 1, wherein R², R³, R⁴, R⁵ and R⁶ are hydrogen.

7. The compound of claim 1, wherein L is selected from the group consisting of:

8. The compound of claim 1, wherein X is O.

9. The compound of claim 1, wherein X is S.

10. The compound of claim 1, wherein the compound is selected from the group consisting of:

11. A first device comprising an organic light emitting device, the organic light emitting device comprising:

an anode;

a cathode;

an organic layer, disposed between the anode and the cathode, wherein the organic layer is an emissive layer and the organic layer comprises a compound having a structure according to Formula I

12. The first device of claim 11, wherein the compound is selected from the group consisting of:

13. The first device of claim 11, wherein the organic layer is an emissive layer and the compound having Formula I is a host.

14. The first device of claim 13, wherein the organic layer further comprises an emissive dopant.

15. The first device of claim 14, wherein the emissive dopant is a transition metal complex having at least one ligand selected from the group consisting of:

16. The first device of claim 11, wherein the device further comprises a blocking layer and the compound having Formula I is a blocking material in the blocking layer.

17. The first device of claim 11, wherein the device further comprises an electron transporting layer and the compound having Formula I is an electron transporting material in the electron transporting layer.

18. The first device of claim 11, wherein the first device is a consumer product.

19. The first device of claim 11, wherein the first device is an organic light-emitting device.

20. The first device of claim 11, wherein the first device comprises a lighting panel.

21. A formulation comprising a compound having a structure according to Formula I