申请人:Kobayashi Satoshi
公开号:US20070063190A1
公开(公告)日:2007-03-22
An aromatic compound of the following formula (1), (2), (5) or (6).
wherein, Ar
1
and Ar
3
represent a tetra-valent aromatic hydrocarbon group or a tetra-valent heterocyclic group, and Ar
2
, Ar
4
, Ar
5
, Ar
6
and Ar
7
represent a tri-valent aromatic hydrocarbon group or a tri-valent heterocyclic group, A
1
represents -Z
1
-, -Z
2
-Z
3
- or -Z
4
=Z
5
-, wherein Z
1
, Z
2
and Z
3
represent O, S or the like and Z
4
and Z
5
represent N, B, P or the like, X
1
, X
2
, X
3
, X
4
, X
9
, X
10
, X
11
, and X
12
represent a halogen atom or the like.