A metal complex of formula (I):
M(L1)x(L2)y (I)
wherein:
M is a second or third row transition metal;
L1 in each occurrence is independently a light-emitting ligand;
L2 is an auxiliary ligand;
x is at least 1;
y is at least 1;
each L1 is a group of formula (IIa) or (IIb):
wherein R1-R10 are each independently H or a substituent with the proviso at least one of R3, R5 and R9 of at least one L1 is a group of formula -(Ar)p wherein Ar in each occurrence is independently an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents, and p is at least 2.
式 (I) 的
金属络合物:
M(L1)x(
L2)y (I)
其中
M 是第二排或第三排过渡
金属;
每次出现的 L1 都是独立的发光
配体
L2 是辅助
配体;
x 至少为 1
y 至少为 1;
每个 L1 是式 (IIa) 或 (IIb) 的基团:
其中 R1-R10 各自独立地为 H 或取代基,但至少一个 L1 的 R3、R5 和 R9 中的至少一个为式-(Ar)p 的基团,其中 Ar 在每次出现时独立地为芳基或杂芳基,该芳基或杂芳基可以未被取代或被一个或多个取代基取代,且 p 至少为 2。