Organic electroluminescent materials and devices
US11937503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2018 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Nov 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition comprising a first compound capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature is disclosed. The first compound has at least one aromatic ring with at least one substituent R of Formula I In the structure of Formula I, R′ includes at least one fluorine atom; R′ represents mono to a maximum possible number of substitutions, or no substitution; each R2 is a hydrogen or one of a variety of substituents; L is an organic linker or direct bond; any two R1, R2 substituents may be joined or fused together to form a ring; the dashed line of Formula I is a bond to a first aromatic ring of the at least one aromatic ring; and n is an integer from 1 to 10. Organic light emitting devices and consumer products containing the compounds are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.