An approach to fast 2D nuclear magnetic resonance at low concentration based on p-H2 -induced polarization and nonuniform sampling.
Magn Reson Chem
; 59(12): 1236-1243, 2021 12.
Article
em En
| MEDLINE
| ID: mdl-34096084
ABSTRACT
Recent developments in para-hydrogen-induced polarization (PHIP) methods allow the nuclear magnetic resonance (NMR) detection of specific classes of compounds, down to sub-micromolar concentration in solution. However, when dealing with complex mixtures, signal resolution requires the acquisition of 2D PHIP-NMR spectra, which often results in long experimental times. This strongly limits the applicability of these 2D PHIP-NMR techniques in areas in which high-throughput analysis is required. Here, we present a combination of fast acquisition and nonuniform sampling that can afford a 10-fold reduction in measuring time without compromising the spectral quality. This approach was tested on a mixture of substrates at micromolar concentration, for which a resolved 2D PHIP spectrum was acquired in less than 3 min.
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Imageamento por Ressonância Magnética
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En
Ano de publicação:
2021
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Article