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Selective host-guest interaction between metal ions and metal-organic frameworks using dynamic nuclear polarization enhanced solid-state NMR spectroscopy



Selective host-guest interaction between metal ions and metal-organic frameworks using dynamic nuclear polarization enhanced solid-state NMR spectroscopy



Chemistry 20(49): 16308-16313



The host-guest interaction between metal ions (Pt(2+) and Cu(2+) ) and a zirconium metal-organic framework (UiO-66-NH2 ) was explored using dynamic nuclear polarization-enhanced (15) N{(1) H} CPMAS NMR spectroscopy supported by X-ray absorption spectroscopy and density functional calculations. The combined experimental results conclude that each Pt(2+) coordinates with two NH2 groups from the MOF and two Cl(-) from the metal precursor, whereas Cu(2+) do not form chemical bonds with the NH2 groups of the MOF framework. Density functional calculations reveal that Pt(2+) prefers a square-planar structure with the four ligands and resides in the octahedral cage of the MOF in either cis or trans configurations.

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Accession: 055695041

Download citation: RISBibTeXText

PMID: 25297002

DOI: 10.1002/chem.201403884


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