申请人:——
公开号:US20020034658A1
公开(公告)日:2002-03-21
Use of an organic EL device comprising a dipyridylthiophene derivative represented by the following general formula (1) has made it possible to provide an organic EL device with high luminous efficiency at low voltage. Provided that in the formula, X is S or SO
2
, R
5
and R
6
each independently represent a hydrogen atom, an alkyl group of 1-6 carbons, an alkenyl group of 2-6 carbons, an alkoxy group of 1-6 carbons, an aryloxy group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group, with the proviso that when R
5
and R
6
each independently represent an alkenyl, alkoxy, aryl or heterocyclic group they may be bonded together but not into a benzo condensed ring, and A
1
and A
2
are independently a 2-pyridyl group or 3-pyridyl group.
1
使用以下一般式(1)表示的二吡啶噻吩衍生物组成的有机EL器件,使得能够提供具有高发光效率且在低电压下工作的有机EL器件。在该式中,X为S或SO2,R5和R6分别独立地表示氢原子、碳数为1-6的烷基、碳数为2-6的烯基、碳数为1-6的烷氧基、芳基氧基、取代或未取代的芳基或取代或未取代的杂环基,但要注意当R5和R6分别独立地表示烯基、烷氧基、芳基或杂环基时,它们可以结合在一起但不能形成苯环。A1和A2分别独立地为2-吡啶基团或3-吡啶基团。