FOUR COORDINATED PLATINUM AND PALLADIUM COMPLEXES WITH GEOMETRICALLY DISTORTED CHARGE TRANSFER STATE AND THEIR APPLICATIONS IN LIGHT EMITTING DEVICES

• US 20120215001A1
• Filed: 02/17/2012
• Published: 08/23/2012
• Est. Priority Date: 02/18/2011
• Status: Active Grant

• Current Assignee: Arizona Board of Regents (University of Arizona)
• Original Assignee: Arizona Board of Regents (University of Arizona)
• Inventors: Li, Jian, Turner, Eric, Hang, Xiaochun
• Granted Patent: US 8,816,080 B2
• Time in Patent Office: Days
• US Class Current: 546/4
• CPC Class Codes: C07F 15/0086 Platinum compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1003 Carbocyclic compounds
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1014 bridged by heteroatoms, e.g. N, P, Si or B
• 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 30/80 Constructional details
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/828 Transparent cathodes, e.g. comprising thin metal layers
• CPC Class Codes: H10K 85/346 comprising platinum
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

Described herein are platinum and palladium compounds with geometrically distorted charge transfer state, applications and methods for the preparation thereof. The platinum and/or palladium compounds described herein are capable of emitting light and can be used in light emitting devices.

Claims

1. A compound comprising a metal atom and a ligand attached to the metal atom, wherein the ligand is a tridentate and/or tetradentate ligand and wherein the ligand comprises at least one of

a) a high triplet energy emitting ligand having a rigid structure,

b) a donor-acceptor ligand having a distorted geometry,

c) or a combination thereof,

and wherein any two or more of the ligands are connected through a bridging ligand.

2. A light emitting device comprising the compound of claim 1.

3. An OLED device comprising the compound of claim 1.

4. The OLED device of claim 5, wherein the device is a phosphorescent OLED device.

5. A photovoltaic device comprising the compound of claim 1.

6. A luminescent display device comprising the compound of claim 1.

7. A compound represented by the formula:

8. The compound of claim 7, wherein at least one of the linkage groups is substituted.

9. The compound of claim 7, wherein two or more of the linkage groups are connected to each other.

10. The compound of claim 7, represented by the formula

11. The compound of claim 7, represented by the formula

12. The compound of claim 7, represented by the formula

13. The compound of claim 7, comprising an emitting component having the structure

14. A light emitting device comprising the compound of claim 7.

15. An OLED device comprising the compound of claim 7.

16. The OLED device of claim 15, wherein the device is a phosphorescent OLED device.

17. A photovoltaic device comprising the compound of claim 7.

18. A luminescent display device comprising the compound of claim 7.