A method for producing a halogen-crosslinked iridium dimer with increased purity that is used as a precursor in production of a cyclometalated iridium complex useful as a phosphorescent material for organic electroluminescent devices, organic electrochemiluminescent devices, luminescent sensors, photosensitizing pigments, photocatalysts, luminescent probes, various light sources, and the like. The halogen-crosslinked iridium dimer is represented by the following formula:
In this formula, each X represents a halogen atom, each CyA represents an optionally substituted five- or six-membered cyclic ring containing nitrogen atoms, and is linked to iridium via the nitrogen atoms, and each CyB represents an optionally substituted five- or six-membered ring containing carbon atoms, and is linked to iridium via the carbon atoms. CyA and CyB can be linked together to form an optionally substituted ring.
一种提高纯度的卤素交联
铱二聚体的生产方法,该方法可用作生产环甲基化
铱络合物的前体,这种
铱络合物可用作有机电致发光装置、有机电致
化学发光装置、发光传感器、光敏
颜料、光催化剂、发光探针、各种光源等的
磷光材料。卤素交联
铱二聚体由下式表示:
在此式中,每个 X 代表一个卤素原子,每个 CyA 代表一个含有氮原子的任选取代的五元或六元环,并通过氮原子与
铱相连,每个 CyB 代表一个含有碳原子的任选取代的五元或六元环,并通过碳原子与
铱相连。CyA 和 CyB 可以连接在一起,形成一个任选取代的环。