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US 2006/0134458 A1Published application
Aromatic amine derivative and organic electroluminescence element
OwnerHisayuki Kawamurainventor
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Abstract
A novel aromatic amine derivative having an asymmetric structure; and an organic electroluminescence device comprising a cathode, an anode and an organic thin film layer which is disposed between the cathode and the anode and comprises at least one layer comprising a light emitting layer, wherein at least one layer in the organic thin film layer comprises the above aromatic amine derivative singly or as a component of a mixture. Crystallization of the molecules is suppressed, and the yield in the production of the organic electroluminescence device can be increased.
Claims6
An aromatic amine derivative represented by following general formula (1):
- A-L-B (1)
- wherein A represents a diarylamino group represented by:
- B represents a diarylamino group represented by:
- Ar1 to Ar4 each independently representing a substituted or unsubstituted aryl group having 5 to 50 nuclear atoms, and the two diarylamino groups represented by A and B being not same with each other;
- and
- L represents a linking group comprising a substituted or unsubstituted arylene group having 5 to 50 nuclear atoms or a linking group comprising a plurality of substituted or unsubstituted arylene groups having 5 to 50 nuclear atoms bonded with each other through a single bond, oxygen atom, sulfur atom, nitrogen atom or a saturated or unsaturated divalent aliphatic hydrocarbon group having 1 to 20 nuclear carbon atoms.
3 more elements
Dependencies are inferred from the claim text.