Benzofluorene compound, emission materials and organic electroluminescent device
US9099654B2 · kind B2 · utility
2Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2013 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Jan 23, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are benzofluorene compounds of formula (1) exhibiting excellent performance when applied to an organic electroluminescent device,wherein Ar1 and Ar2 are aryl which may be substituted; R1 and R2 each are independently hydrogen, alkyl which may be substituted, cycloalkyl which may be substituted or aryl which may be substituted, and at least one of R1 and R2 is aryl which may be substituted; and the substituents in Ar1, Ar2, R1 and R2 each are independently selected from the group consisting of alkyl having 1 to 24 carbon atoms, cycloalkyl having 3 to 12 carbon atoms and aryl having 6 to 30 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.