Pyridyl carbene phosphorescent emitters

• US 8,883,322 B2
• Filed: 03/08/2011
• Issued: 11/11/2014
• Est. Priority Date: 03/08/2011
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Wu, Yonggang, Xia, Chuanjun, Fiordeliso, James, Layek, Suman, Alleyne, Bert, Dyatkin, Alexey Borisovich, Ansari, Nasrin, Beers, Scott, Barron, Ed, Brooks, Jason
• Primary Examiner(s): YAMNITZKY, MARIE ROSE
• Application Number:
  US13/043,180
• Publication Number:
  US 20120228583A1
• Time in Patent Office: 1,344 Days
• Field of Search: None
• US Class Current: 428/690
• CPC Class Codes: C07F 15/0033 Iridium compounds
• 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 2211/1029 containing one nitrogen atom as the heteroatom
• 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: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

Organometallic compounds comprising an imidazole carbene ligand having a N-containing ring fused to the imidazole ring are provided. In particular, the N-containing ring fused to the imidazole ring may contain one nitrogen atom or more than one nitrogen atom. These compounds may demonstrate high photoluminescent (PL) efficiency, Gaussian emission spectra, and/or short excited state lifetimes. These materials may be especially useful as blue phosphorescent emitters.

Claims

1. A compound selected from the group consisting of:

2. A first device comprising an organic light emitting device, comprising:

an anode;

a cathode; and

an organic layer, disposed between the anode and the cathode, wherein the organic layer comprises a compound selected from the group consisting of;

3. The first device of claim 2, wherein the organic layer is an emissive layer and the compound is an emissive dopant.

4. The first device of claim 3, wherein the organic layer further comprises a host.

5. The first device of claim 4, wherein the host comprises at least one of the chemical groups selected from the group consisting of:

6. The first device of claim 4, wherein the host is a metal complex.

7. The first device of claim 4, wherein the host is a metal carbene complex.

8. The first device of claim 2, wherein the first device is a consumer product.