Excited-State Structure and Delocalization in Ruthenium(II)−Bipyridine Complexes That Contain Phenyleneethynylene Substituents
作者:Yingsheng Wang、Shengxia Liu、Mauricio R. Pinto、Dana M. Dattelbaum、Jon R. Schoonover、Kirk S. Schanze
DOI:10.1021/jp013008j
日期:2001.12.1
A comprehensive photophysical study has been carried out on the two complexes [(bpy)2Ru(4,4‘-PE-bpy)]2+ and [(bpy)2Ru(5,5‘-PE-bpy)]2+ (44Ru and 55Ru, respectively, where bpy = 2,2‘-bipyridine and PE = phenyleneethynylene). The objective of this work is to determine the effect of the phenyleneethynylene substituents on the properties of the metal-to-ligand charge-transfer excited state. The complexes
对两种配合物[(bpy)2Ru(4,4'-PE-bpy)]2+和[(bpy)2Ru(5,5'-PE-bpy)]2+进行了全面的光物理研究(分别为 44Ru 和 55Ru,其中 bpy = 2,2'-联吡啶和 PE = 亚苯基乙炔基)。这项工作的目的是确定亚苯基乙炔基取代基对金属-配体电荷转移激发态性质的影响。通过使用紫外-可见吸收、光致发光以及紫外-可见和红外瞬态吸收光谱对配合物进行了表征。结果表明MLCT激发态定位在PE取代的bpy配体上。而且,