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US 6,649,772 B2Granted
3,6,9-Trisubstituted carbazoles for light emitting diodes
AssigneeAcademia Sinica
InventorsJiann T'Suen Lin, K. R. Justin Thomas, Yu-Tai Tao, Chung-Wen Ko
Life of this patent
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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.
Claims9
A compound of formula (I):
- wherein
- each of Z1 and Z2, independently, is;
- R1 is heteroaryl or unsubstituted aryl;
- each of R2-R3, 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.
5 more elements
Dependencies are inferred from the claim text.