Phosphorescent material, their preparations and applications
US8957217B2 · kind B2 · utility
3Cited by
0References
11Claims
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Key dates
| Filing date | May 29, 2012 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Dec 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The subject invention is directed to tetradentate bis-(NHC carbenes) alkylene ligand Pt(II) complexes, tetradentate bis-(NHC carbenes) alkylene ligands, and its ligand precursors, for preparation of the Pt(II) complexes. The Pt(II) complexes show a deep blue emission with an improved quantum efficiency and can be used for fabrication of OLEDs with an electroluminescence layer that comprise the bis-(NHC carbenes) alkylene ligand Pt(II) complexes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.