Organic electroluminescent materials and devices
US10256419B2 · kind B2 · utility
5Cited by
31References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 5, 2015 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Jan 6, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Imidazophenanthridine ligands and metal complexes are provided. The compounds exhibit improved stability through a linking substitution that links a nitrogen bonded carbon of an imidizole ring to a carbon on the adjacent fused aryl ring. The compounds may be used in organic light emitting devices, particularly as emissive dopants, providing devices with improved efficiency, stability, and manufacturing. In particular, the compounds provided herein may be used in blue devices having high efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.