申请人:Universal Display Corporation
公开号:EP3231809A2
公开(公告)日:2017-10-18
A compound that includes a ligand L, having the formula,
is provided. In the structure of Formula I, each R1, R2, R3, R4, R4, R5, R6, R7, and R8 is independently selected from a variety of substituents; any adjacent substituents are optionally joined or fused into a ring; at least one of R3, R4, and R5 is not hydrogen; "a" is an integer from 0 to 10; (i) when a is 0, at least one of R7, R8, and an R2 adjacent to ring B, is not hydrogen, and (ii) when a is 1 to 10, at least one of an R2 adjacent to ring A and an R6 adjacent to ring C is not hydrogen; ligand L is coordinated to a metal M having an atomic weight greater than 40; and ligand L is optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand.
一种包含
配体 L 的化合物,其
配体 L 的
化学式为
的化合物。在式 I 的结构中,每个 R1、R2、R3、R4、R4、R5、R6、R7 和 R8 独立地选自各种取代基;任何相邻取代基可任选连接或融合成环;R3、R4 和 R5 中至少有一个不是氢;"a "是 0 到 10 的整数;(i) 当 a 为 0 时,R7、R8 和与环 B 相邻的 R2 中至少有一个不是氢;(ii) 当 a 为 1 至 10 时,与环 A 相邻的 R2 和与环 C 相邻的 R6 中至少有一个不是氢;
配体 L 与原子量大于 40 的
金属 M 配位;
配体 L 可选择与其他
配体连接,组成三齿、四齿、五齿或六齿
配体。