Organic electroluminescent materials and devices
US10804475B2 · kind B2 · utility
14Cited by
31References
22Claims
0Family size
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Key dates
| Filing date | Feb 1, 2017 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Jul 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A compound having a ligand LA of Formula I, is described. In the structure of Formula I, A is five-membered or six-membered carbocyclic or heterocyclic ring; B is a five-membered carbocyclic or heterocyclic ring; each of Z0 to Z6 is selected from nitrogen and carbon; each R1 to R4 is independently selected from a variety of substituents; any two adjacent substituents are optionally joined or fused into a ring; ligand LA is coordinated to Pt; and the ligand LA is optionally linked with one or more other ligands. Formulations and devices, such as OLEDs, that include the first compound are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.