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Reversible Interactions with para-Hydrogen Enhance NMR Sensitivity by Polarization Transfer

Open access
Adams, Ralph W., Aguilar, Juan A., Atkinson, Kevin D., Cowley, Michael J., Elliott, Paul I. P., Duckett, Simon B., Green, Gary G. R., Khazal, Iman G., López-Serrano, Joaquín, Williamson, David C.·2009·Science

Abstract

The sensitivity of both nuclear magnetic resonance spectroscopy and magnetic resonance imaging is very low because the detected signal strength depends on the small population difference between spin states even in high magnetic fields. Hyperpolarization methods can be used to increase this difference and thereby enhance signal strength. This has been achieved previously by incorporating the molecular spin singlet para-hydrogen into hydrogenation reaction products. We show here that a metal complex can facilitate the reversible interaction of para-hydrogen with a suitable organic substrate such that up to an 800-fold increase in proton, carbon, and nitrogen signal strengths are seen for the substrate without its hydrogenation. These polarized signals can be selectively detected when combined with methods that suppress background signals.

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Metadata

Authors
Adams, R. W., Aguilar, J. A., Atkinson, K. D., Cowley, M. J., Elliott, P. I. P., Duckett, S. B., Green, G. G. R., Khazal, I. G., López-Serrano, J., & Williamson, D. C.
Venue
Science
Published
2009-03-27
Volume
323
Issue
5922
Pages
1708-1711
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2110111386
Cited by
1,031
References
0
FWCI
14.47
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Reversible Interactions with para-Hydrogen Enhance NMR Sensitivity by Polarization Transfer. https://app.cochat.ai/papers/10.1126/science.1168877
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Adams, R. W., Aguilar, J. A., Atkinson, K. D., Cowley, M. J., Elliott, P. I. P., Duckett, S. B., Green, G. G. R., Khazal, I. G., López-Serrano, J., & Williamson, D. C. (2009). Reversible Interactions with para-Hydrogen Enhance NMR Sensitivity by Polarization Transfer. Science. https://doi.org/10.1126/science.1168877

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