申请人:——
公开号:US20020168543A1
公开(公告)日:2002-11-14
An object of the present invention is to provide a blue-light emitting organic EL device having excellent color purity and high brightness. The present invention features that used as a component material of the organic EL device is a specific diphenylaminoarylene compound represented by any one of the following formulas [1], [3], [6], [7], [8] and [9]:
1
wherein Ar
1
to Ar
24
each independently represents a C
6-20
aryl group, R
1
to R
68
each independently represents a hydrogen atom, a halogen atom, a hydroxy group, a substituted or unsubstituted amino group, a nitro group, a cyano group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted alkoxycarbonyl group or a carboxyl group, with the proviso that at least one of each of Ar
1
to Ar
4
, Ar
9
to Ar
12
, and Ar
17
to Ar
20
represents a styryl-containing diarylamino group; at least one of each of Ar
5
to Ar
8
, Ar
13
to Ar
16
, and Ar
21
to Ar
24
represents a diphenylaminostyryl-containing diarylamino group; either one of R
1
and R
4
, either one of R
45
and R
46
, at least one of R
18
and R
21
and at least one of R
51
and R
52
each does not represent: a hydrogen atom, at least one but not all of R
57
, R
59
, R
60
and R
62
represents a group other than a hydrogen atom and at least one of R
63
, R
65
, R
66
and R
68
does not represent a hydrogen atom.
本发明的目的是提供一种具有极佳色纯度和高亮度的发蓝光有机电致发光器件。本发明的特点是,作为有机 EL 器件的组成材料,使用的是由下列任何一种式子代表的特定二苯基氨基芳基化合物:[1]、[3]、[6]、[7]、[8]和[9]:
1
其中 Ar
1
至 Ar
24
各自独立地代表一个 C
6-20
芳基,R
1
至 R
68
各自独立地代表氢原子、卤素原子、羟基、取代或未取代的氨基、硝基、氰基、取代或未取代的烷基、取代或未取代的烯基、取代或未取代的环烷基、取代或未取代的烷氧基、取代或未取代的芳香族烃基、取代或未取代的芳香族杂环基、取代或未取代的芳烷基、取代或未取代的芳氧基、取代或未取代的烷氧羰基或羧基,但其中至少一个 Ar
1
至 Ar
4
,Ar
9
至 Ar
12
和 Ar
17
至 Ar
20
代表含苯乙烯基的二芳基氨基;Ar
5
至 Ar
8
Ar
13
至 Ar
16
和 Ar
21
至 Ar
24
代表含二苯基氨基苯乙烯基的二芳基氨基;R
1
和 R
4
、R
45
和 R
46
,R
18
和 R
21
和 R
51
和 R
52
各自不代表: 氢原子、至少一个但不是全部 R
57
, R
59
, R
60
和 R
62
代表氢原子以外的基团,且 R
63
, R
65
, R
66
和 R
68
不代表氢原子。