Utilization of SABRE-Derived Hyperpolarization To Detect Low-Concentration Analytes via 1D and 2D NMR Methods

Lyrelle S. Lloyd, Ralph W. Adams, Michael Bernstein, Steven Coombes, Simon B. Duckett, Gary G. R. Green, Richard. J. Lewis, Ryan E. Mewis, Christopher J. Sleigh

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The characterization of materials by the inherently insensitive method of NMR spectroscopy plays a vital role in chemistry. Increasingly, hyperpolarization is being used to address the sensitivity limitation. Here, by reference to quinoline, we illustrate that the SABRE hyperpolarization technique, which uses para-hydrogen as the source of polarization, enables the rapid completion of a range of NMR measurements. These include the collection of C-13, C-13{H-1}, and NOE data in addition to more complex 2D COSY, ultrafast 2D COSY and 2D HMBC spectra. The observations are made possible by the use of a flow probe and external sample preparation cell to re-hyperpolarize the substrate between transients, allowing repeat measurements to be made within seconds. The potential benefit of the combination of SABRE and 2D NMR methods for rapid characterization of low-concentration analytes is therefore established.

Original languageEnglish
Pages (from-to)12904-12907
Number of pages4
JournalJournal of the American Chemical Society
Issue number31
Publication statusPublished - 8 Aug 2012

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