Synthesis of platinum and palladium complexes as narrow-band phosphorescent emitters for full color displays

• US 9,698,359 B2
• Filed: 01/15/2016
• Issued: 07/04/2017
• Est. Priority Date: 05/26/2011
• Status: Active Grant

• Current Assignee: Arizona Board of Regents (University of Arizona)
• Original Assignee: Arizona Board of Regents (University of Arizona)
• Inventors: Turner, Eric, Li, Jian
• Primary Examiner(s): Aulakh, Charanjit
• Application Number:
  US14/996,522
• Publication Number:
  US 20160197291A1
• Time in Patent Office: 536 Days
• Field of Search: 546 2, 313504, 25230116
• CPC Class Codes: C07F 15/0086 Platinum compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1044 containing two nitrogen atoms as heteroatoms
• 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

Platinum and palladium complexes are disclosed that can be useful as narrow band phosphorescent emitters. Also disclosed are methods for preparing and using the platinum and palladium complexes.

Claims

1. A composition comprising a complex of the formula:

2. The composition of claim 1, wherein

3. The composition of claim 1, wherein the complex is represented by the structure:

4. The complex of claim 1.

5. A light-emitting device comprising the complex of claim 1.

6. A lighting device comprising the light-emitting device of claim 5.

7. The lighting device of claim 6, wherein the lighting device comprises a full color display.

8. The complex of claim 3.

9. A light-emitting device comprising the complex of claim 8.

10. A lighting device comprising the light-emitting device of claim 9.

11. The lighting device of claim 10, wherein the lighting device comprises a full color display.

12. The composition of claim 1, wherein Ar₁ is substituted or unsubstituted:

pyridyl, imidazolyl, or pyrazolyl.

13. The composition of claim 1, wherein Ar₁ is substituted or unsubstituted pyridyl.

14. The composition of claim 1, wherein each Ar₂ and Ar₃ is substituted or unsubstituted phenyl.

15. The composition of claim 1, wherein Ar₄ is substituted or unsubstituted pyridyl.

16. The composition of claim 1, wherein each of X₁ and X₄ is nitrogen atom.

17. The composition of claim 1, wherein each of X₂ and X₃ is carbon atom.

18. The composition of claim 1, wherein Ar₆ is absent.

19. The composition of claim 1, wherein A₁ is an optionally substituted nitrogen atom.

20. The composition of claim 1, wherein b₂ is absent.

21. The composition of claim 1, wherein b₁ is absent such that Ar₅ and Ar₃ are connected through a bond;

and b₃ is absent such that Ar₃ and Ar₄ are connected through a bond.