Phosphorescent materials
US9175211B2 · kind B2 · utility
1Cited by
31References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2010 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Apr 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Compounds comprising a 2-phenylpyridine ligand further substituted with a heterocyclic group are provided. In particular, the compound comprises a 2-phenylpyridine ligand further substituted with a nitrogen-containing heterocycle. The compounds may be used in organic light emitting devices to provide devices having improved efficiency and lifetime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.