申请人:UNIVERSAL DISPLAY CORPORATION
公开号:US20220393117A1
公开(公告)日:2022-12-08
Compounds of Formula I,
and Formula IIa,
Formula IIb,
are provided. In these structures, M is Pt or Pd; each of X
1
to X
6
, X
9
to X
12
, and Z
1
to Z
3
is C or N; each of L
1
, L
2
, L
3
, and L
4
is a direct bond or a linker; at least three of L
1
, L
2
, L
3
, and L
4
are present; each K
1
, K
2
, and K
3
is a bond, O, or S; when Z
1
is N, ring A in Formula I is not a pyridine or pyrazole; L
5
is a bond or an organic linker; Y is selected from the group consisting of amino, alkoxy, aryloxy, or SiR
1
R
2
R
3
; when Y is SiR
1
R
2
R
3
, L
2
is not BR. Devices, consumer products, and formulations containing these compounds are also disclosed.