Abstract
Two polypyridyl ligands 2,2′,2″-tris((4,5-diazafluoren-9-yliminoxy)ethyl)amine (L1) and 1,3,5-tris((4,5-diazafluoren-9-yliminoxy)methyl))-2,4,6-trimethylbenzene (L2), and corresponding trinuclear Ru(II) complexes [(bpy)6L1−2(RuII)3](PF6)6 (Ru-L1, Ru-L2) have been synthesized. Cyclic voltammetry of the complexes are consistent with one Ru(II)-centered oxidation at 1.32V and four ligand-centered reductions. Photophysical behaviors are investigated by UV–Vis absorption and fluorescence spectrometry. The two complexes show metal-to-ligand charge transfer absorption at 440nm and emission at around 580nm.
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