Metal complexes of the formula I or I′ [LDH]
n
M[L]
m
(I) [LTH](M[L]
p
)
2
(I1) wherein n is an integer 1 or 2, m and p each is an integer 1 or 2, the sum (n+m) being 2 or 3, M is a metal with an atomic weight of greater than 40 such as Iridium, L is a ligand as described in claim
1
, and LDH is a bidentate ligand of the formula I1 and LTH is a dimer of LDH, binding to 2 metal atoms M, of the formula II′ wherein W is selected from O, S, NR
4
, CR
5
R
6
, X is N or CR
7
, Y is selected from O, S, NR
8
; and further residues are as defined in claim
1
, show good light emitting efficiency in electroluminescent applications.
式I或I'的
金属配合物[LDH]nM[L]m(I)[LTH](M[L]p)2(I1),其中n是整数1或2,m和p各自是整数1或2,和(n+m)为2或3,M是原子量大于40的
金属,例如
铱,L是如权利要求1所述的
配体,LDH是式I1的双齿
配体,LTH是LDH的二聚体,与式II'中的2个
金属原子M配位,其中W选自O,S,NR4,CR5R6,X为N或CR7,Y选自O,S,NR8;而其他残基如权利要求1所定义,这些配合物在电致发光应用中表现出良好的发光效率。