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Research article - Peer-reviewed, 2018

Insights into Functionalization of Metal-Organic Frameworks Using In Situ NMR Spectroscopy

Yuan, Ning; Church, Tamara L.; Brandt, Erik G.; Hedin, Niklas; Zou, Xiaodong; Bernin, Diana

Abstract

Postsynthetic reactions of metal-organic frameworks (MOFs) are versatile tools for producing functional materials, but the methods of evaluating these reactions are cumbersome and destructive. Here we demonstrate and validate the use of in situ NMR spectroscopy of species in the liquid state to examine solvent-assisted ligand exchange (SALE) and postsynthetic modification (PSM) reactions of metal-organic frameworks. This technique allows functionalization to be monitored over time without decomposing the product for analysis, which simplifies reaction screening. In the case of SALE, both the added ligand and the ligand leaving the framework can be observed. We demonstrate this in situ method by examining SALE and PSM reactions of the robust zirconium MOF UiO-67 as well as SALE with the aluminum MOF DUT-5. In situ NMR spectroscopy provided insights into the reactions studied, and we expect that future studies using this method will permit the examination of a variety of MOF-solute reactions.

Keywords

metal-organic frameworks (MOFs); NMR Spectroscopy; reaction screening; solvent-assisted ligand exchange (SALE); postsynthetic modification (PSM)

Published in

Scientific Reports
2018, volume: 8, article number: 17530

Authors' information

Yuan, Ning
Stockholm University
Yuan, Ning
Swedish University of Agricultural Sciences, Department of Molecular Sciences
Church, Tamara L.
Stockholm University
Brandt, Erik G.
Stockholm University
Hedin, Niklas
Stockholm University
Zou, Xiaodong
Stockholm University
Bernin, Diana
Chalmers University of Technology

UKÄ Subject classification

Inorganic Chemistry

Publication Identifiers

DOI: https://doi.org/10.1038/s41598-018-35842-1

URI (permanent link to this page)

https://res.slu.se/id/publ/97279