Hyperpolarized long-lived nuclear spin states in monodeuterated methyl groups.
Hyperpolarized long-lived nuclear spin states in monodeuterated methyl groups.
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DOI:
10.1039/c8cp00253c
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发表时间:
2018-04-18
期刊:
影响因子:
--
通讯作者:
Levitt MH
中科院分区:
文献类型:
--
作者:
Elliott SJ ;Meier B ;Vuichoud B ;Stevanato G ;Brown LJ ;Alonso-Valdesueiro J ;Emsley L ;Jannin S ;Levitt MH
Dissolution-dynamic nuclear polarization is implemented to hyperpolarize long-lived nuclear spin states in monodeuterated methyl groups. 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.
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影响因子:
15
作者:
Claytor, Kevin;Theis, Thomas;Warren, Warren S.
通讯作者:
Warren, Warren S.
影响因子:
8.6
作者:
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通讯作者:
Levitt, MH
DOI:
10.1073/pnas.1010570107
发表时间:
2010-10-05
影响因子:
11.1
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通讯作者:
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2.2
作者:
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通讯作者:
Ardenkjaer-Larsen, Jan Henrik
影响因子:
19.6
作者:
通讯作者:
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