一种新型联吡啶钌配合物的合成及电致化学发光性能研究

本文合成了一种多联吡啶钌配合物(bpy)2Ru(phenCl4)(PF6)2，bpy为2,2′-联吡啶, phenCl4为3,4,7,8-四氯-1,10-邻菲罗啉，并用元素分析、红外光谱、核磁共振谱对其结构进行了表征。此化合物在紫外和可见光区都有吸收，在可见光区的最大吸收波长是440nm，这是典型的金属到配体（MLCT）的跃迁，其光致发光性能也显示出MLCT迁移特征，并且随溶剂不同，其最大发射波长从630nm变化到649nm。值得注意的是，此配合物的电致化学发光性能受pH影响不大，这与传统的随pH增大电致化学发光强度增大的联吡啶钌不同，尤其在强碱条件下，其背景电致化学发光很小。

Synthesis and electrochemiluminescent study of a novel ruthenium complex [Rubis(bipyridyl) (3,4,7,8-tetrachrolo-1,10-phenanthroline)](PF6)2

An o-phenanthroline-substituted ruthenium complex, Rubis(bipyridyl) (3,4,7,8-tetrachrolo-1,10-phenanthroline)](PF6)2, has been synthesized and the structure of the complex was characterized by element analysis, IR spectroscopy and proton NMR spectroscopy. The complex displays absorptions in the UV and visible regions, with visible maximum absorption at 440 nm, a typical metal-to-ligand charge transfer (MLCT) transitions. Photoluminescence emission also has the characteristics of the MLCT transitions with the maxima wavelengths ranged from 630 to 649 nm depending on the different solvents. The electrochemiluminescence (ECL) of the complex was found to be less dependant on the pH, which was distinctly different from that of the well known ruthenium tris(bipyridine) complex. Furthermore the background ECL signal of the complex did not increase even in a strong alkaline condition.