Nitrogenous heterocycle derivative, and organic...

Details Nitrogenous heterocycle derivative, and organic... Nitrogenous heterocycle derivative, and organic...

2005-04-04

2010-11-16

Tarazano, D. Lawrence (Department: 1786)

Stock material or miscellaneous articles

Composite

Of inorganic material

C313S504000, C548S305100

Reexamination Certificate

active

07833632

ABSTRACT:
Provided is a material for an organic EL device realizing an organic EL device capable of having a high current efficiency even at a low voltage. Provided is a derivative of heterocyclic compound having a nitrogen atom represented by the following general formula (A-1) or (A-2). In the formulae, R1ato R5aeach represent a substituent, Ar1ato Ar3aeach represent a single bond or a divalent connecting group, and HAr represents a group represented by a general formula (A-3) or (A-4). R6ato R10aeach represent a substituent.

REFERENCES:
patent: 2006/0147747 (2006-07-01), Yamamoto et al.
patent: 2002 47274 (2002-02-01), None
patent: 03 060956 (2003-07-01), None
patent: WO 03/060956 (2003-07-01), None
patent: 2004 080975 (2004-09-01), None
U.S. Appl. No. 11/722,609, issued Jun. 22, 2007, Kawamura, et al.

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