Polarization transfer via field sweeping in parahydrogen-enhanced nuclear magnetic resonance
Polarization transfer via field sweeping in parahydrogen-enhanced nuclear magnetic resonance
We show that in a spin system of two magnetically inequivalent protons coupled to a heteronucleus such as 13C, an adiabatic magnetic field sweep, passing through zero field, transfers the proton singlet order into magnetization of the coupled heteronucleus. This effect is potentially useful in parahydrogen-enhanced nuclear magnetic resonance and is demonstrated on singlet-hyperpolarized [1-13C]maleic acid, which is prepared via the reaction between [1-13C]acetylene dicarboxylic acid and para-enriched hydrogen gas. The magnetic field sweeps are of microtesla amplitudes and have durations on the order of seconds. We show a polarization enhancement by a factor of 104 in the 13C spectra of [1-13C]maleic acid in a 1.4 T magnetic field.
1-9
Eills, James
23130b21-68fa-4c8b-9399-e55f2e71ef36
Blanchard, John W.
3bb7de6e-f147-4527-9b1c-fbf8cb138f47
Wu, Teng
4237d6c7-56fd-41e6-9a9f-2c95e7d25c2e
Bengs, Christian
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Hollenbach, Julia
fc4aaccb-7f5b-407c-870d-a6fd9f4ed4af
Budker, Dmitry
2d8147c6-82b8-4e9a-8871-cb0d49b9cbea
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
7 May 2019
Eills, James
23130b21-68fa-4c8b-9399-e55f2e71ef36
Blanchard, John W.
3bb7de6e-f147-4527-9b1c-fbf8cb138f47
Wu, Teng
4237d6c7-56fd-41e6-9a9f-2c95e7d25c2e
Bengs, Christian
6d086f95-d3e8-4adc-86a5-6b255aee4dd1
Hollenbach, Julia
fc4aaccb-7f5b-407c-870d-a6fd9f4ed4af
Budker, Dmitry
2d8147c6-82b8-4e9a-8871-cb0d49b9cbea
Levitt, Malcolm H.
bcc5a80a-e5c5-4e0e-9a9a-249d036747c3
Eills, James, Blanchard, John W., Wu, Teng, Bengs, Christian, Hollenbach, Julia, Budker, Dmitry and Levitt, Malcolm H.
(2019)
Polarization transfer via field sweeping in parahydrogen-enhanced nuclear magnetic resonance.
The Journal of Chemical Physics, 150 (17), , [174202].
(doi:10.1063/1.5089486).
Abstract
We show that in a spin system of two magnetically inequivalent protons coupled to a heteronucleus such as 13C, an adiabatic magnetic field sweep, passing through zero field, transfers the proton singlet order into magnetization of the coupled heteronucleus. This effect is potentially useful in parahydrogen-enhanced nuclear magnetic resonance and is demonstrated on singlet-hyperpolarized [1-13C]maleic acid, which is prepared via the reaction between [1-13C]acetylene dicarboxylic acid and para-enriched hydrogen gas. The magnetic field sweeps are of microtesla amplitudes and have durations on the order of seconds. We show a polarization enhancement by a factor of 104 in the 13C spectra of [1-13C]maleic acid in a 1.4 T magnetic field.
Text
JE_sweep_JCP
- Accepted Manuscript
More information
Accepted/In Press date: 12 April 2019
e-pub ahead of print date: 7 May 2019
Published date: 7 May 2019
Identifiers
Local EPrints ID: 430974
URI: http://eprints.soton.ac.uk/id/eprint/430974
ISSN: 0021-9606
PURE UUID: 3abb9e0b-982c-4357-b751-409b63e731c9
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Date deposited: 20 May 2019 16:30
Last modified: 16 Mar 2024 03:19
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Author:
James Eills
Author:
John W. Blanchard
Author:
Teng Wu
Author:
Christian Bengs
Author:
Julia Hollenbach
Author:
Dmitry Budker
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