An asymmetric tetradentate metal complex of a N^C^C^N comprising tetradentate ligand has a metal connected to binding sites which are connected to each other via three or four covalent bonds that can be either single or double bonds with bridging linkers reside between C^C and C^N moieties. These linkers result in three-dimension metal complexes with distorted square planar geometries. The four donor atoms coordinate to a metal center. Upon metal binding a 5-6-6 membered metallocycle is formed upon chelation including a first nitrogen donor bond, a first metal-carbon bond, a second metal-carbon bond, and a second nitrogen donor bond. The light emission from these metal complexes can be tuned by the ligand structure over the entire visible spectrum.
一种N^C^C^N的不对称四齿
金属配合物,包括四齿
配体的
金属与通过三或四个共价键连接在一起的结合位点相连,这些共价键可以是单键或双键,连接在C^C和C^N部分之间的桥接连接物。这些连接物导致失真的四方平面几何形态的三维
金属配合物。四个给体原子配位到
金属中心。在
金属配位后,通过螯合形成一个5-6-6的环状结构,其中包括第一个氮给体键、第一个
金属-碳键、第二个
金属-碳键和第二个氮给体键。这些
金属配合物的发光可以通过
配体结构在整个可见光谱范围内进行调节。