Luminescence Enhancement of cis-[Ru(bpy)2(py)2]2+ via Confinement within a Metal-Organic Framework
Daniel Micheroni1, Zekai Lin1, Yu-Sheng Chen2
1Department of Chemistry , The University of Chicago , Chicago , Illinois 60637 , United States.
Abstract:
We report the synthesis, characterization, and photophysical and photochemical properties of [Ru(bpy)2(py)2]2+@Zn-oxalate metal-organic framework (Ru@MOF; bpy is 2,2'-bipyridine and py is pyridine). In Ru@MOF, the cavities of the anionic Zn-oxalate MOF tightly encapsulate [Ru(bpy)2(py)2]2+ complexes, thereby altering the vibrational and electronic states of [Ru(bpy)2(py)2]2+ and preventing photosubstitution of py ligands. [Ru(bpy)2(py)2]2+ in Ru@MOF exhibits significantly increased photoluminescence lifetime and quantum yield, likely through destabilizing the dd state and enhancing photochemical stability.
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