A compound of formula (I)
wherein X is O or S; each A is a LUMO-deepening substituent; R
5
and R
6
are independently in each occurrence a substituent; x independently in each occurrence is 0, 1, 2, 3 or 4; y independently in each occurrence is 0, 1 or 2, and each z is independently 0 or 1 with the proviso that at least one z is 1. The compound may be used as a host for a phosphorescent light-emitting material in an organic light-emitting device.
公式(I)的化合物
其中X是O或S;每个A是一种降低最低未占分子轨道(LU
MO)的取代基;R5和R6在每个出现时独立地是一个取代基;x在每个出现时独立地是0、1、2、3或4;y在每个出现时独立地是0、1或2,并且每个z独立地是0或1,但至少有一个z为1。该化合物可用作有机发光二极管中
磷光
发光材料的主体。