申请人:Universal Display Corporation
公开号:US10700293B2
公开(公告)日:2020-06-30
Compounds having the structure of Formula M(LA)x(LB)y and Formula III,
are disclosed. In Formula M(LA)x(LB)y, Ligand LA is
and ligand LB is a mono anionic bidentate ligand. In these compounds, metal M has an atomic number greater than 40; x is 1, 2, or 3; y is 0, 1, or 2; x+y is the oxidation state of metal M; L11 represents a linking group selected from alkyl, cycloalkyl, aryl, and heteroaryl; L12 represents a linking group selected from NR15 and PR15; each R1, R2, R3, R4, R5, R6, R11, R12, R13, R14, and R15 is independently selected from a group of substituents, wherein any adjacent substituents are optionally joined to form a fused or unfused ring; and LA and LB are optionally joined to form a ligand that is at least tetradentate. Formulations and devices, such as OLEDs, that include the compound of Formula M(LA)x(LB)y(LC)z are also described.
具有式 M(LA)x(LB)y 和式 III 结构的化合物、
公开了具有式 M(LA)x(LB)y 和式 III 结构的化合物。在式 M(LA)x(LB)y 中,配体 LA 是
配体 LB 是单阴离子双齿配体。在这些化合物中,金属 M 的原子序数大于 40;x 为 1、2 或 3;y 为 0、1 或 2;x+y 为金属 M 的氧化态;L11 代表选自烷基、环烷基、芳基和杂芳基的连接基团;L12 代表选自 NR15 和 PR15 的连接基团;每个 R1、R2、R3、R4、R5、R6、R11、R12、R13、R14 和 R15 都独立地选自一组取代基,其中任何相邻取代基可选择连接以形成融合或未融合的环;以及 LA 和 LB 可选择连接以形成至少为四价的配体。还描述了包括式 M(LA)x(LB)y(LC)z 的化合物的制剂和器件,如 OLED。