申请人:Universal Display Corporation
公开号:US11339182B2
公开(公告)日:2022-05-24
A compound of Formula (LA)n-M-(LC)m, wherein the ligand LA is of Formula I, and the ligand LC is selected from Formula I that is different than ligand LA, a monoanionic bidentate ligand, or a monoanionic monodentate ligand. M is a metal; and n is 1 or 2, and m is 0, 1 or 2.
Ring A is a 5-membered or 6-membered heteroaryl ring, which is bonded to Ring B;
Z is selected from O or S; Z1 is selected from a carbene C or N; and Z2 is selected from C or N. Moreover, two adjacent ring carbons of Ring B will form a group of formula D, wherein * represents the point of attachment to the two adjacent ring carbons,
Formula D, wherein X is selected from NRN, O, S, or Se; and RN is selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, heteroalkyl, aryl, heteroaryl, and combinations thereof; and Y1, Y2, Y3, and Y4 are independently CRY1, CRY2, CRY3, and CRY4, respectively, or N, and Ring D has no more than two nitrogen ring atoms. An OLED that includes a compound of the Formula I above in an organic layer is also described.
式 (
LA)n-M-(LC)m 的化合物,其中
配体 LA 为式 I,
配体 LC 选自与
配体 LA 不同的式 I、单阴离子双齿
配体或单阴离子单齿
配体。M 是
金属;n 是 1 或 2,m 是 0、1 或 2。
环 A 是与环 B 键合的 5 元或 6 元杂芳基环;
Z 选自 O 或 S;Z1 选自碳 C 或 N;Z2 选自 C 或 N。此外,环 B 的两个相邻环碳将形成一个式 D 的基团,其中 * 代表与两个相邻环碳的连接点、
式 D,其中 X 选自 NRN、O、S 或 Se;且 RN 选自氢、
氘、烷基、环烷基、杂烷基、芳基、杂芳基及其组合组成的组;且 Y1、Y2、Y3 和 Y4 分别独立地为 CRY1、CRY2、CRY3 和 CRY4,或 N,且环 D 具有不超过两个氮环原子。还描述了一种在有机层中包含上述式 I 化合物的有机发光二极管。