申请人:Sumitomo Chemical Company Limited
公开号:US20140175415A1
公开(公告)日:2014-06-26
A composition comprising a polymer and a phosphorescent material wherein the polymer comprises repeat units of formula (I):
wherein A is a heteroaryl group containing a nitrogen atom, and A may be unusubstituted or substituted with one or more substituents;
R
1
in each occurrence is independently a substituent; and
n is 0, 1, 2, 3 or 4.