A compound including a first ligand LA having the structure of Formula I,
is disclosed. In Formula I, rings A and B are each a 6-membered rings; Z1 and Z2 are each carbon or nitrogen; each RA and RB is independently hydrogen or a variety of substituents; any two substituents are optionally joined or fused into a ring; at least one RA or RB comprises an aromatic group substituted by a bridge structure, and this RA or RB joins with an adjacent substituent and fuses to ring A or B; the bridge structure comprises a backbone structure that forms a fused first ring; the backbone structure is saturated, comprises at least one heteroatom, and is optionally further substituted; and the ligand LA is coordinated to a metal M that can be coordinated to other ligands.
一种化合物,包括具有式 I 结构的第一
配体 LA、
的化合物。在式 I 中,环 A 和环 B 分别为 6 元环;Z1 和 Z2 分别为碳或氮;每个 RA 和 RB 独立为氢或各种取代基;任意两个取代基可选择连接或融合成环;至少一个 RA 或 RB 包括一个被桥接结构取代的芳香基团,该 RA 或 RB 与相邻取代基连接并与环 A 或环 B 融合;桥式结构包括形成融合第一环的骨架结构;骨架结构是饱和的,包括至少一个杂原子,并可选择进一步取代;
配体 LA 与可与其他
配体配位的
金属 M 配位。