Fast Wide‐Line Solid‐State NMR on a Low‐Cost Benchtop Spectrometer

Morten Kjærulff Sørensen, Nicolas M. Balsgart, Ole Jensen, Niels Christian Nielsen, Thomas Vosegaard

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Abstract

Solid-state NMR may provide access to a wealth of information on molecular structure and dynamics. However, for many applications, the acquisition is challenged by broad resonances implying large spectral linewidths and low sensitivity. Conventionally, this is tackled by using costly and laboratory-fixed spectrometers based on large high-field superconducting magnets. In this Communication, we demonstrate that a range of challenging wide-line solid-state NMR spectra can be acquired on a robust, maintenance-free, low-cost benchtop/mobile NMR spectrometer with a sensitivity comparable to common high-field instruments. The performance and versatility for recording sensitive wide-line spectra is demonstrated through acquisition of 31P NMR of paramagnetic FePO 4 and full quadupolar lineshapes of Al 2O 3 ( 27Al) and KNO 3 ( 14N). Also, we introduce interleaved acquisition of frequency-stepped slices providing a dramatic reduction of the required experiment time.

Original languageEnglish
JournalChemPhysChem
Volume19
Issue22
Pages (from-to)2985-2988
Number of pages4
ISSN1439-4235
DOIs
Publication statusPublished - 23 Sept 2018

Keywords

  • NMR spectroscopy
  • analytical methods
  • low-field NMR
  • sensors
  • solid-state structures.

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