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Issue 15, 2018
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Hyperpolarized long-lived nuclear spin states in monodeuterated methyl groups

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Abstract

Monodeuterated methyl groups may support a long-lived nuclear spin state, with a relaxation time exceeding the conventional spin–lattice relaxation time T1. Dissolution-DNP (dynamic nuclear polarization) may be used to hyperpolarize such a long-lived spin state. This is demonstrated for the CH2D groups of a piperidine derivative. The polarized sample is manipulated in the ambient magnetic field of the laboratory, without destruction of the hyperpolarized singlet order. Strongly enhanced CH2D signals are observed more than one minute after dissolution, even in the presence of paramagnetic radicals, by which time the NMR signal from the hyperpolarized proton magnetization has completely disappeared.

Graphical abstract: Hyperpolarized long-lived nuclear spin states in monodeuterated methyl groups

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Supplementary files

Article information


Submitted
12 Jan 2018
Accepted
15 Feb 2018
First published
29 Mar 2018

This article is Open Access

Phys. Chem. Chem. Phys., 2018,20, 9755-9759
Article type
Communication

Hyperpolarized long-lived nuclear spin states in monodeuterated methyl groups

S. J. Elliott, B. Meier, B. Vuichoud, G. Stevanato, L. J. Brown, J. Alonso-Valdesueiro, L. Emsley, S. Jannin and M. H. Levitt, Phys. Chem. Chem. Phys., 2018, 20, 9755
DOI: 10.1039/C8CP00253C

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