In situ single-crystal synchrotron X-ray diffraction studies of biologically active gases in metal-organic frameworks
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Metal-organic frameworks (MOFs) are well known for their ability to adsorb various gases. The use of MOFs for the storage and release of biologically active gases, particularly nitric oxide (NO) and carbon monoxide (CO), has been a subject of interest. To elucidate the binding mechanisms and geometry of these gases, an in situ single crystal X-ray diffraction (scXRD) study using synchrotron radiation at Diamond Light Source has been performed on a set of MOFs that display promising gas adsorption properties. NO and CO, were introduced into activated Ni-CPO-27 and the related Co-4,6-dihydroxyisophthalate (Co-4,6-dhip). Both MOFs show strong binding affinity towards CO and NO, however CO suffers more from competitive co-adsorption of water. Additionally, we show that morphology can play an important role in the ease of dehydration for these two systems.
Main , R M , Vornholt , S M , Rice , C M , Elliott , C , Russell , S E , Kerr , P , Warren , M R & Morris , R E 2023 , ' In situ single-crystal synchrotron X-ray diffraction studies of biologically active gases in metal-organic frameworks ' , Communications Chemistry , vol. 6 , 44 . https://doi.org/10.1038/s42004-023-00845-1
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DescriptionFunding: The authors are also grateful for financial assistance from the ERC under advanced grant 787073, the EPSRC for a studentship (EP/N509759/1) and the CRITICAT Centre for Doctoral Training (EP/L016419/1).
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