A Fully Noble Metal-Free Photosystem Based on Cobalt-Polyoxometalates Immobilized in a Porphyrinic Metal-Organic Framework for Water Oxidation.
Grégoire PailleMaria Gomez-MingotCatherine Roch-MarchalBenedikt Lassalle-KaiserPierre MialaneMarc FontecaveCaroline Mellot-DraznieksAnne DolbecqPublished in: Journal of the American Chemical Society (2018)
The sandwich-type polyoxometalate (POM) [(PW9O34)2Co4(H2O)2]10- was immobilized in the hexagonal channels of the Zr(IV) porphyrinic MOF-545 hybrid framework. The resulting composite was fully characterized by a panel of physicochemical techniques. Calculations allowed identifying the localization of the POM in the vicinity of the Zr6 clusters and porphyrin linkers constituting the MOF. The material exhibits a high photocatalytic activity and good stability for visible-light-driven water oxidation. It thus represents a rare example of an all-in-one fully noble metal-free supramolecular heterogeneous photocatalytic system, with the catalyst and the photosensitizer within the same porous solid material.
Keyphrases
- metal organic framework
- visible light
- pet imaging
- photodynamic therapy
- ionic liquid
- density functional theory
- molecular dynamics
- energy transfer
- molecular dynamics simulations
- capillary electrophoresis
- magnetic nanoparticles
- computed tomography
- hydrogen peroxide
- nitric oxide
- electron transfer
- mass spectrometry
- quantum dots