Aromatic amine derivative and organic electroluminescence device using same
AssigneeIdemitsu Kosan Co., Ltd.
InventorsMasahiro Kawamura, Nobuhiro Yabunouchi
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Abstract
An aromatic amine compound having a specific structure, the following organic electroluminescence device and the noble aromatic amine compounds enable for realizing the device are provided. The device, which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein at least one of the organic thin film layers comprises the aromatic amine derivative singly or as its mixture component, exhibits various luminescent hue and has high heat resistance, a long lifetime, high luminance and high current efficiency. In particular, the device exhibits low decay of luminance based on driving it.
Claims9
An aromatic amine derivative represented by the general formula (I):
- wherein R1 to R6 each independently represents a substituted or unsubstituted alkyl group having carbon atoms of 1 to 6, or a substituted or unsubstituted aryl group having nuclear carbon atoms of 6 to 20, L1 to L3 each independently represents an linking group represented by the general formula (II);
- wherein R7 and R8 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group having carbon atoms of 1 to 6, or a substituted or unsubstituted aryl group having nuclear carbon atoms of 6 to 20, in addition, R7 and R8 may bond each other to form a saturated or unsaturated ring;
- r1 to r6 each independently represents an integer of 0 to 5, and r1+r2+r3+r4+r5+1, further, when any one of r1 to r6 is 2 or larger, each of R1 to R6 corresponding thereto may be the same with or different from the other;
- however, at least one of R1 to R6 is a substituted or unsubstituted aryl group having nuclear carbon atoms of 6 to 20.
Dependencies are inferred from the claim text.