申请人:YABUNOUCHI Nobuhiro
公开号:US20080145707A1
公开(公告)日:2008-06-19
The present invention provides a novel aromatic amine derivative enabling to obtain an organic electroluminescence device which is driven under a low voltage, exhibits small increase in the driving voltage after continuous driving for a long time and has a long life. The amine derivative is represented by the following general formula (1). In the formula, R
1
to R
7
each represent, for example, hydrogen atom or a substituted or unsubstituted aryl group having 5 to 50 nuclear carbon atoms; a represents an integer of 1 or greater; b, c, g and h each represent an integer of 1 to 5, and d, e and f each represent an integer of 1 to 4; and Ar
1
and Ar
2
represent a group represented by following general formulae (2) and (3), respectively, and the groups represented by Ar
1
and Ar
2
are not same with each other. R
8
to R
11
each represent, for example, hydrogen atom; and i and m each represent an integer of 1 to 5, j and k each represent an integer of 1 to 4, n and p each represent an integer of 0 or greater, and n≠p.
本发明提供了一种新的芳香胺衍生物,使得可以获得一种在低电压下驱动的有机电致发光器件,其在连续驱动长时间后驱动电压的增加很小,并且具有长寿命。该胺衍生物由以下通式(1)表示。在该式中,R1至R7分别表示氢原子或具有5到50个核碳原子的取代或未取代芳基基团;a表示大于或等于1的整数;b、c、g和h分别表示1到5的整数,d、e和f分别表示1到4的整数;Ar1和Ar2分别表示由以下通式(2)和(3)表示的基团,且由Ar1和Ar2表示的基团不相同。R8至R11分别表示氢原子;i和m分别表示1到5的整数,j和k分别表示1到4的整数,n和p分别表示大于或等于0的整数,且n≠p。