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Synthesis, photophysical, and electrochemical properties of two novel trinuclear Ru(II) polypyridyl complexes

机译:两种新型三核Ru(II)多吡啶基配合物的合成,光物理和电化学性质

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摘要

Two polypyridyl ligands 2,2',2"-tris((4,5-diazafluoren-9-yliminoxy)ethyl)amine (L~1) and 1,3,5-tris((4,5-diazafluoren-9-ylimin-oxy)methyl))-2,4,6-trimethylbenzene (L~2), and corresponding trinuclear Ru(II) complexes [(bpy)6L~(1-2)(Ru~(II))3](PF6)6 (Ru-L~1, Ru-L~2) have been synthesized. Cyclic voltammetry of the complexes are consistent with one Ru(II)-centered oxidation at 1.32 V and four ligand-cen-tered reductions. Photophysical behaviors are investigated by UV-Vis absorption and fluorescence spectrometry. The two complexes show metal-to-ligand charge transfer absorption at 440 nm and emission at around 580 nm.
机译:两个聚吡啶基配体2,2',2“-三((4,5-二氮杂芴-9-亚氨基氧基)乙基)胺(L〜1)和1,3,5-三((4,5-二氮杂芴-9- ylimin-oxy)methyl))-2,4,6-trimethylbenzene(L〜2)和相应的三核Ru(II)配合物[(bpy)6L〜(1-2)(Ru〜(II))3](合成了PF6)6(Ru-L〜1,Ru-L〜2)。配合物的循环伏安法与在1.32 V时以Ru(II)为中心的氧化和四个以配体为中心的还原相一致。用紫外-可见吸收和荧光光谱法研究了这两种配合物,在440 nm处有金属到配体的电荷转移吸收,在580 nm处有发射。

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