A polymeric carbazole compound comprising a monomer unit of formula (I): is disclosed, wherein x and y are equal to zero or 1, and n is an integer equal to or larger than zero. P represents a phenyl group, and C
1
, C
2
and C
3
represent carbazole units. The derealization of the triplet wave function over the biphenyl structure is decreased by introducing twists in the polymer backbone at the location where the two carbazole units are connected, whereby the triplet energy is increased. The twist is introduced by substituents, e.g. methoxy or 3,7-dimethyloctyloxy. The polymeric carbazole compound may be used as a semiconducting material. The semiconducting material may be used as a host matrix for luminescent emitters.
本发明揭示了一种
聚合物咔唑化合物,其包括式(I)的单体单元:其中x和y等于零或1,n是大于或等于零的整数。P代表
苯基,C1、C2和C3代表
咔唑基。通过在两个
咔唑基连接处的
聚合物骨架中引入扭曲,可以降低三重波函数在
联苯结构上的去实化,从而增加三重能量。扭曲是通过取代基引入的,例如甲
氧基或3,7-二甲
氧基辛
氧基。
聚合物咔唑化合物可用作半导体材料。半导体材料可用作发光发射体的主体基质。