Red phosphorescent compounds and organic electroluminescent devices using the same
US8501328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2006 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Aug 1, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2211/188
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are red phosphorescent compoundsof the following one of Formulas 1 to 3 R1 and R2 are independently a C1-C4 alkyl group, R3, R4, R5 and R6 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, R1, R2, R3 and R4 are independently selected from C1-C4 alkyl groups and C1-C4 alkoxy groups, R1, R2, R3 and R4 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, and is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.