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

doi:10.1002/cphc.201800711

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

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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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 language	English
Journal	ChemPhysChem
Volume	19
Issue	22
Pages (from-to)	2985-2988
Number of pages	4
ISSN	1439-4235
DOIs	https://doi.org/10.1002/cphc.201800711
Publication status	Published - 19 Nov 2018

Keywords

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

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title = "Fast Wide‐Line Solid‐State NMR on a Low‐Cost Benchtop Spectrometer",

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.",

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AU - Sørensen, Morten Kjærulff

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AU - Jensen, Ole

AU - Nielsen, Niels Christian

AU - Vosegaard, Thomas

PY - 2018/11/19

Y1 - 2018/11/19

N2 - 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.

AB - 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.

KW - NMR spectroscopy

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

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