3,6,9-Trisubstituted carbazoles for light emitting diodes
US6649772B2 · kind B2 · utility
20Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Nov 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D409/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention features substituted carbazole compounds of formula (I): Each of Z1 and Z2, independently, is each of A1 and A2, independently, is S, O, NR, or CH═CH; each of Y1 and Y2, independently, is aryl or heteroaryl; each of R1-R5, independently, is aryl or heteroaryl; and each of R6-R11, independently, is H, CN, alkyl, OR, NRR′, COR, or C(O)OR; and each of R and R′, independently, is H or alkyl. The compounds are useful as hole-transporting, light-emitting molecules with high glass transition temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.