申请人:Sumitomo Chemical Company Limited
公开号:US20140151659A1
公开(公告)日:2014-06-05
An unsubstituted or substituted phosphorescent compound of formula (I):
Wherein:
M is a transition metal;
L in each occurrence is independently a mono- or poly-dentate ligand;
R
8
is H or a substituent;
R
9
and R
10
are each independently selected from the group consisting of branched, linear or cyclic C
1-20
alkyl wherein non-adjacent C atoms of the C
1-20
alkyl may be replaced with —O—, —S—, —NR
12
—, —SiR
12
2
— or —COO— and one or more H atoms may be replaced with F or —NR
12
2
, wherein R
12
is H or a substituent;
R
11
in each occurrence is independently H or a substituent, wherein two groups R
11
may be linked to form a ring;
x is at least 1;
y is 0 or a positive integer;
and z1, z2 and z3 are each independently 0 or a positive integer.