Energy Transfer Dynamics in Metal−Organic Frameworks

Citations Over TimeTop 10% of 2010 papers

Abstract

Isomorphous metal-organic frameworks (MOFs) based on {M[4,4'-(HO(2)C)(2)-bpy](2)bpy}(2+) building blocks (where M = Ru or Os) were designed and synthesized to study the classic Ru to Os energy transfer process that has potential applications in light-harvesting with supramolecular assemblies. The crystalline nature of the MOFs allows precise determination of the distances between metal centers by X-ray diffraction, thereby facilitating the study of the Ru→Os energy transfer process. The mixed-metal MOFs with 0.3, 0.6, 1.4, and 2.6 mol % Os doping were also synthesized in order to study the energy transfer dynamics with a two-photon excitation at 850 nm. The Ru lifetime at 620 nm decreases from 171 ns in the pure Ru MOF to 29 ns in the sample with 2.6 mol % Os doping. In the mixed-metal samples, energy transfer was observed with an initial growth in Os emission corresponding with the rate of decay of the Ru excited state. These results demonstrate rapid, efficient energy migration and long distance transfer in isomorphous MOFs.

Related Papers

• → Functional Supramolecular Architectures of Dipyrrin Complexes(2018)65 cited
• → Supramolecular Assemblies of Cucurbit[10]uril Based on Outer Surface Interactions(2016)15 cited
• → Chemically Produced Excited States(1974)98 cited
• → Heteropolymetallic Supramolecular Solid-State Architectures Constructed from Dicyanoaurate Ion, Phen, and 3d Metals(2006)9 cited
• → Helical Structures of Tribenzylamine Supramolecular Complexes with [CoCl4]2−/[CuCl4]2−, and Conformational Comparisons of Tribenzylamine in Different Supramolecular Complexes(2013)4 cited