A light-emitting composition comprising a mixture of a fluorescent light-emitting material a triplet-accepting copolymer comprising a triplet-accepting repeat unit and a repeat unit of formula (I):
wherein A is a divalent group; R
1
independently in each occurrence is a substituent; R
2
in each occurrence is H or a substituent; and x independently in each occurrence is 0, 1, 2 or 3.
一种发光组合物,包括荧光
发光材料、三重态受体共聚物和式(I)重复单元,其中A是二价基团;R1在每个发生中都是取代基;R2在每个发生中都是氢或取代基;x在每个发生中都是0、1、2或3。