申请人:UNIVERSAL DISPLAY CORPORATION
公开号:US20200308204A1
公开(公告)日:2020-10-01
A compound comprising a first bidentate ligand L
A
, wherein L
A
comprises a structure of Formula I;
wherein Z is selected from the group consisting of O, S, NR, BR, CR
K
R
L
, SiR
K
R
L
, —CR
K
R
L
CR
M
R
N
—, —SiR
K
R
L
SiR
M
R
N
—, —CR
K
R
L
O—, —SiR
K
R
L
O—, and —CR
K
═CR
L
—;
wherein ring A, ring B, and ring C are each independently a 5-membered carbocyclic ring, 5-membered heterocyclic ring, 6-membered carbocyclic ring or 6-membered heterocyclic ring;
wherein L
A
is coordinated to a metal M forming a 5-membered chelate ring;
wherein M is selected from the group consisting of Ir, Pt, Pd, Ru, Rh, Os, Re, Cu, Ag, and Au;
wherein R
A
, R
B
, and R
C
each represent mono to the maximum allowable substitution, or no substitution;
wherein each R, R
K
, R
L
, R
M
, R
N
, R
A
, R
B
, and R
C
is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
wherein M is optionally coordinated to one or more other ligands;
wherein any two substituents are optionally joined or fused together to form a ring; and
with the provision that L
A
does not comprise the following structure:
一种化合物,包括第一双齿配体LA,其中LA包括结构式I的结构;其中Z选择自O、S、NR、BR、CRKRL、SiRKRL、—CRKRLCRMRN—、—SiRKRLSiRMRN—、—CRKRLO—、—SiRKRLO—和—CRK═CRL—组成的群体;其中环A、环B和环C分别独立为5元碳环、5元杂环、6元碳环或6元杂环;其中LA配位于金属M形成5元螯合环;其中M选择自Ir、Pt、Pd、Ru、Rh、Os、Re、Cu、Ag和Au组成的群体;其中RA、RB和RC分别表示单取代至最大允许取代,或无取代;其中每个R、RK、RL、RM、RN、RA、RB和RC独立地是氢或从氘、卤素、烷基、环烷基、杂原子烷基、芳基烷基、烷氧基、芳氧基、氨基、硅基、硼基、烯基、环烯基、杂原子烯基、炔基、芳基、杂芳基、酰基、羧酸、醚、酯、腈、异腈、硫基、亚硫基、砜基、膦基等组成的取代基中选择;其中M可以选择与一个或多个其他配体配位;其中任意两个取代基可以选择连接或融合在一起形成环;并且提供LA不包括以下结构: