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The invention discloses a fluorene-based organic electroluminescent compound and an organic electroluminescent device, and the structural formula is as shown in the specification. Wherein, L1. L2, R1 are the same or different and are each independently a linear or branched alkyl group of R2, a substituted or unsubstituted C1 - C30 alkyl, substituted or unsubstituted C2 - C30 C3 - C30 heteroaromatic hydrocarbon group; A is a substituted or unsubstituted C6 - C30 C2 - C30 heteroaromatic hydrocarbon group; the starting voltage of the device is reduced; the power consumption of the device is relatively reduced, so that the service life of the device is correspondingly improved C2 - C30 C5 - C60 C6 - C30. (by machine translation)
The present invention addresses the problems of providing a compound that can be used as a hole transport material having excellent hole injection or transport performance, electron blocking performance, light stability, electrical stability, and thermal stability, providing a hole transport material containing the compound, and an organic electronic device including an organic EL element or an organic photoelectric conversion element provided with a hole transport layer containing the compound, particularly an organic electronic device including an organic EL element having a long lifetime and high luminous efficiency. A compound is represented by general formula (1-1); in the formula, R1 to R6 and Ara to Arc are as defined in the specification.
The present invention relates to a compound for a cover layer and an organic light-emitting device including the same. The compound for a cover layer according to an example of the present invention is suitable for an organic light-emitting device, and ca
Provided are an organic electroluminescence device that not only provides high efficiency but also has a long lifetime, and an aromatic amine derivative that realizes the device. The organic electroluminescence device includes an aromatic amine derivative, including at least one substituent A having dibenzofuran and at least one substituent B selected from groups each having dibenzofuran or carbazole, in a molecule thereof, in which the substituent A and the substituent B include groups different from each other, and the substituent A and the substituent B are bonded to the same nitrogen atom, or different nitrogen atoms, in the molecule. The molecules of the aromatic amine derivative hardly crystallize, which improves a yield in the production of the organic electroluminescence device. In the organic electroluminescence device, including an organic thin film layer formed of one or more layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode, the aromatic amine derivative is contained in at least one layer, particularly a hole transport layer, in the organic thin film layer.
4-(4-bromophenyl)dibenzofuran
4-aminoterphenyl
![N-(4-(dibenzo[b,d]furan-4-yl)phenyl)-[1,1’:4',1''-terphenyl]-4-amine](/upload/2023/2/2ba81807-c137-4c84-bfeb-ef7697c0b66b.png)
N-(4-(dibenzo[b,d]furan-4-yl)phenyl)-[1,1’:4',1''-terphenyl]-4-amine
| Conditions | Yield |
|---|---|
|
With
dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; tris-(dibenzylideneacetone)dipalladium(0); sodium t-butanolate;
In
toluene;
at 100 ℃;
for 5h;
Inert atmosphere;
Sealed tube;
|
98% |
|
With
tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine; sodium t-butanolate;
In
toluene;
Reflux;
|
72% |
N-(4-(dibenzo[b,d]furan-4-yl)phenyl)-[1,1’:4',1''-terphenyl]-4-amine
| Conditions | Yield |
|---|---|
|
With
tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine; sodium t-butanolate;
In
toluene;
Inert atmosphere;
Reflux;
|
65% |
|
|
4-(4-bromophenyl)dibenzofuran
4-aminoterphenyl
N,N-bis[4-(dibenzofuran-4-yl)phenyl]-4-amino-p-terphenyl
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