Carbazole derivative, organic semiconductor element, light emitting element, and electronic device
申请人:Nomura Ryoji
公开号:US20050031899A1
公开(公告)日:2005-02-10
The problem of the present invention is to provide a carbazole derivative which has an excellent heat resistance and can be formed into a film without crystallization. Also, a problem is to produce an organic semiconductor element, a light emitting element and an electronic device by employing the carbazole derivative. For the purpose, a novel carbazole derivative represented by following general formula (1) is provided:
(in the formula, I represents a core carbazole (G
0
) illustrated by general formula (2), Z represents an internally branched carbazole (G
1
to G
n-1
) illustrated by general formula (3), E represents an end carbazole (G
n
) illustrated by general formula (4), n represents an integer showing generation number of dendrimer, X
1
represents hydrogen, halogen, a cynano group, an alkyl group, an aryl group, a heterocyclic residue or the like, X
2
and X
3
in (G
(n-m)-1
) (provided, n-m≧1) make a covalent bond with X
4
in (G
(n-m)
), and each of R
1
to R
8
represents independently hydrogen, halogen, a cynano group, an alkyl group, a dialkylamino group, a diarylamino group, a heterocyclic residue or the like).
本发明的问题是提供一种具有优异耐热性且可以形成无结晶的咔唑衍生物。此外,另一个问题是通过采用这种咔唑衍生物来生产有机半导体元件、发光元件和电子设备。为此,提供了以下一般式(1)所代表的新型咔唑衍生物:
(在该式中,I代表由一般式(2)所示的核心咔唑(G0),Z代表由一般式(3)所示的内部分支咔唑(G1至Gn-1),E代表由一般式(4)所示的末端咔唑(Gn),n代表显示树状聚合物代数的整数,X1代表氢、卤素、氰基、烷基、芳基、杂环残基等,(G(n-m)-1)中的X2和X3(其中n-m≧1)与(G(n-m))中的X4形成共价键,每个R1至R8独立地代表氢、卤素、氰基、烷基、二烷基胺基、二芳基胺基、杂环残基等)。