A compound comprising a first ligand LA having the formula
Formula I, is disclosed. In Formula I, ring A is a five- or six-membered carbocyclic or heterocyclic ring; Y1 is selected from carbon and nitrogen; each of X1 to X4 is C or N; at least two adjacent R2s of ring B form a fused structure having the following formula:
ring C is fused to ring B and the wavy lines are bonds attached to ring B; ring D and ring E are either a 5-membered aromatic ring or a 6-membered aromatic ring; each R1, R2, R3, RA, RB, RC, and RD is independently selected from a variety of substituents; ligand LA is coordinated to a metal M and, optionally, linked with other ligands; and M is optionally coordinated to other ligands. Organic light emitting devices and consumer products containing the compounds are also disclosed.
由第一
配体 LA 组成的化合物,其式为
式 I 所组成的化合物。在式 I 中,环 A 是五元或六元碳环或杂环;Y1 选自碳和氮;X1 至 X4 中的每一个都是 C 或 N;环 B 的至少两个相邻 R2 形成具有下式的融合结构:
环 C 与环 B 融合,波浪线是连接到环 B 的键;环 D 和环 E 是 5 元芳香环或 6 元芳香环;每个 R1、R2、R3、RA、RB、RC 和 RD 都独立地选自各种取代基;
配体 LA 与
金属 M 配位,并可选择与其他
配体连接;M 可选择与其他
配体配位。此外,还公开了含有这些化合物的有机发光器件和消费品。