Spectroscopic Evidence for Room Temperature Interaction of Molecular Oxygen with Cobalt Porphyrin Linker Sites within a Metal–Organic Framework

Metalloporphyrin-based metal–organic frameworks offer a promising platform for developing solid-state porous materials with accessible, coordinatively unsaturated metal sites. Probing small-molecule interactions at the metalloporphyrin sites within these materials on a molecular level under ambient...

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Bibliographic Details
Published in:Inorganic chemistry 2016-10, Vol.55 (20), p.10110-10113
Main Authors: Lahanas, Nicole, Kucheryavy, Pavel, Lockard, Jenny V.
Format: Article
Language:English
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Summary:Metalloporphyrin-based metal–organic frameworks offer a promising platform for developing solid-state porous materials with accessible, coordinatively unsaturated metal sites. Probing small-molecule interactions at the metalloporphyrin sites within these materials on a molecular level under ambient conditions is crucial for both understanding and ultimately harnessing this functionality for potential catalytic purposes. Co-PCN-222, a metal–organic framework based on cobalt­(II) porphyrin linkers. is investigated using in situ UV–vis diffuse-reflectance and X-ray absorption spectroscopy. Spectroscopic evidence for the axial interaction of diatomic oxygen with the framework’s open metalloporphyrin sites at room temperature is presented and discussed.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.6b01889