Blue phosphorescent imidazophenanthridine materials
US8142909B2 · kind B2 · utility
38Cited by
23References
44Claims
0Family size
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Key dates
| Filing date | Mar 7, 2008 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Nov 27, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting devices comprising these compounds are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.