Endogenous metal-ion dynamic nuclear polarization for NMR signal enhancement in metal organic frameworks.

ABSTRACT: Rational design of metal-organic framework (MOF)-based materials for catalysis, gas capture and storage, requires deep understanding of the host-guest interactions between the MOF and the adsorbed molecules. Solid-State NMR spectroscopy is an established tool for obtaining such structural information, however its low sensitivity limits its application. This limitation can be overcome with dynamic nuclear polarization (DNP) which is based on polarization transfer from unpaired electrons to the nuclei of interest and, as a result, enhancement of the NMR signal. Typically, DNP is achieved by impregnating or wetting the MOF material with a solution of nitroxide biradicals, which prevents or interferes with the study of host-guest interactions. Here we demonstrate how Gd(iii) ions doped into th

SUBMITTER: Moroz IB 

PROVIDER: S-EPMC10731914 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature