申请人:Nakatani Tomoya
公开号:US20070051922A1
公开(公告)日:2007-03-08
A polymer light emitting material which contains a polymer compound comprising a repeating unit of the following formula (1) or (2) and having a polystyrene-reduced number-average molecular weight of 10
3
to 10
8
, and which exhibits light emission from the triplet excited state.
[wherein Ar
1
and Ar
2
each independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group. X
1
and X
2
each independently represent O, S, C(═O), S(═O), SO
2
, C(R
1
)(R
2
), Si(R
3
)(R
4
), N(R
5
), B(R
6
), P(R
7
) or P(═O)(R
8
). X
1
and Ar
2
bond to adjacent carbon atoms in the aromatic ring of Ar
1
; and X
2
and Ar
1
bond to adjacent carbon atoms in the aromatic ring of Ar
2
];
[wherein Ar
3
and Ar
4
each independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group. X
3
and X
4
each independently represent N, B, P, C(R
9
) or Si(R
10
). X
3
and Ar
4
bond to adjacent carbon atoms in the aromatic ring of Ar
3
; and X
4
and Ar
3
bond to adjacent carbon atoms in the aromatic ring of Ar
4
].