Transition metal complexes containing substituted imidazole carbene as ligands and their application in OLEDs
申请人:Universal Display Corporation
公开号:US09059412B2
公开(公告)日:2015-06-16
Compounds having a metal M complexed to a ligand L containing a substituted imidazole carbene group, which is represented Formula (I), below:
wherein ring B is a 5-member aromatic heterocyclic ring containing at least one heteroatom selected from the group consisting of N, O, and S; wherein ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring; wherein RA represents mono, di, tri, tetra substitutions or no substitution; wherein R1 represents mono, di, or tri substitution or no substitution; wherein each RA, R1 and R2 is independently selected from various possible substituents; wherein Z1 is nitrogen or carbon; and wherein the ligand is optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand. Devices, such as organic light emitting devices (OLEDs) that comprise such compounds are also provided.
化合物具有金属M与含有取代咪唑卡宾基团的配体L络合的结构,该结构表示为下式(I):
其中,环B是一个5元芳香杂环,含有至少一个来自N、O和S的杂原子;环A是一个5元或6元的碳环或杂环;RA代表单取代、双取代、三取代、四取代或不取代;R1代表单取代、双取代、三取代或不取代;每个RA、R1和R2都可以独立地选择各种可能的取代基;Z1是氮或碳;配体可以与其他配体连接,形成三齿、四齿、五齿或六齿配体。还提供了包含这些化合物的设备,例如有机发光器件(OLED)。