Organic electroluminescent materials and devices
US10144867B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2016 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Feb 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/6572
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound having a Pt tetradentate structure selected from the group consisting of is provided. In the structures of Formula 1 and Formula 2, rings C and D each independently represent 5- or 6-membered carbocyclic or heterocyclic ring; L1, L2, and L3 are each independently a direct bond, BR, NR, PR, O, S, Se, C═O, S═O, SO2, SiRR′, GeRR′, alkyl, cycloalkyl, or a combination thereof; the sum of n1 and n2 is 1 or 2; X is selected from NRE, O, S, and Se; X3 and X4 each independently carbon or nitrogen; and one of Q1, Q3, and Q4 is oxygen, and the remaining two of Q1, Q3, and Q4 each represents a direct bond. Formulations and devices, such as an OLEDs, that include the compound of Formulas 1 and 2 are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.