A polymer comprising repeat units of formula (I) and one or more co-repeat units:
Ar1 in each occurrence independently represent an aryl or heteroaryl group;
R1 and R2 in each occurrence independently represent a substituent;
p independently in each occurrence is 0 or a positive integer;
Sp represents a spacer group comprising at least one carbon or silicon atom spacing the two groups Ar1 apart; and
each group Ar1 is bound to an aromatic group of a co-repeat unit.
The polymer may form a charge-transporting layer of an OLED or may be a host material used with a luminescent dopant in a light-emitting layer of an OLED.
由式 (I) 重复单元和一个或多个共重复单元组成的聚合物:
每次出现的 Ar1 独立地代表芳基或杂芳基;
每次出现的 R1 和 R2 独立地代表一个取代基;
每次出现的 p 独立地为 0 或正整数;
Sp 代表间隔基团,包括至少一个碳原子或
硅原子,将两个基团 Ar1 间隔开;以及
每个基团 Ar1 与共重复性单元的芳香基结合。
该聚合物可以形成有机发光二极管的电荷传输层,也可以是在有机发光二极管的发光层中与发光掺杂剂一起使用的主材料。