Ruthenium(II) Complexes with the Mixed Ligands 2,2‘-Bipyridine and 4,4‘-Dialkyl Ester-2,2‘-bipyridine as Pure Red Dopants for a Single-Layer Electrophosphorescent Device
作者:Hong Xia、Yingying Zhu、Dan Lu、Mao Li、Chengbo Zhang、Bing Yang、Yuguang Ma
DOI:10.1021/jp0615149
日期:2006.9.1
polypyridine ruthenium(II) complexes, [Ru(bpy)(2)(dmeb)](2+)(PF(6)(-))(2) (Ru(dmeb)(2+)) and [Ru(bpy)(2)(dbeb)](2+)(PF(6)(-))(2) (Ru(dbeb)(2+)), where bpy is bipyridine, dmeb is 4,4'-dimethyl ester-2,2'-bipyridine, and dbeb is 4,4'-dibutyl ester-2,2'-bipyridine, are synthesized and characterized, and their spectroscopic, electrochemical, and electroluminescent properties are reported. Both Ru(II) complexes
混合配体聚吡啶钌(II)配合物[Ru(bpy)(2)(dmeb)](2 +)(PF(6)(-))(2)(Ru(dmeb)(2+))和[Ru(bpy)(2)(dbeb)](2 +)(PF(6)(-))(2)(Ru(dbeb)(2+)),其中bpy是联吡啶,dmeb是4,4'合成并表征了-二甲酯-2,2'-联吡啶和dbeb为4,4'-二丁酯-2,2'-联吡啶,并报道了它们的光谱,电化学和电致发光性质。与经常使用的tris相比,两种Ru(II)配合物均显示出三重态金属-配体电荷转移激发态的强发射,红移发射光谱(λ(max)= 642 nm)和在有机溶剂中的良好溶解性。 (联吡啶)Ru(II)配合物。这些Ru配合物的电化学测量显示出可逆和准可逆的氧化还原过程,这意味着电致发光器件的稳定性有潜在的改善。通过使用简单的溶液旋涂技术将它们掺杂在聚合物主体中来制造电致磷光器件。对于具有1.0 wt%的Ru