Hyperpolarization read-out through rapidly rotating fields in the zero- and low-field regime.
Hyperpolarization read-out through rapidly rotating fields in the zero- and low-field regime.
复制标题
通过零场和低场状态下快速旋转场的超极化读数。
DOI:
10.1039/d1cp04653e
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发表时间:
2022-04-06
期刊:
影响因子:
--
通讯作者:
Bengs C
中科院分区:
文献类型:
--
作者:
Dagys L;Bengs C
An integral part of para-hydrogen induced polarization (PHIP) methods is the conversion of nuclear singlet order into observable magnetization. In this study polarization transfer to a heteronucleus is achieved through a selective rotation of the proton singlet–triplet states driven by a combination of a rotating magnetic field and a weak bias field. Surprisingly we find that efficient polarization transfer driven by a STORM (Singlet–Triplet Oscillations through Rotating Magnetic fields) pulse in the presence of sub-μT bias fields requires rotation frequencies on the order of several kHz. The rotation frequencies therefore greatly exceed any of the internal frequencies of typical zero- to ultralow field experiments. We further show that the rotational direction of the rotating field is not arbitrary and greatly influences the final transfer efficiency. Some of these aspects are demonstrated experimentally by considering hyperpolarized (1-13C)fumarate. In contrast to most of the existing methods, the STORM procedure therefore represents a promising candidate for quadrupolar decoupled polarization transfer in PHIP experiments. Rapidly rotating magnetic field induces hyperpolarization read-out at low- or zero-field.
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影响因子:
2.9
作者:
DeVience, Stephen J.;Greer, Mason;Rosen, Matthew S.
通讯作者:
Rosen, Matthew S.
影响因子:
8.6
作者:
Pileio, Giuseppe;Carravetta, Marina;Levitt, Malcolm H.
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Levitt, Malcolm H.
影响因子:
2.9
作者:
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通讯作者:
Pines, Alexander
DOI:
10.1002/asia.201800551
发表时间:
2018-05-23
期刊:
Chemistry, an Asian journal
影响因子:
--
作者:
Kovtunov KV;Pokochueva EV;Salnikov OG;Cousin SF;Kurzbach D;Vuichoud B;Jannin S;Chekmenev EY;Goodson BM;Barskiy DA;Koptyug IV
通讯作者:
Koptyug IV
DOI:
10.1002/mrc.4642
发表时间:
2018-06
期刊:
Magnetic resonance in chemistry : MRC
影响因子:
--
作者:
Bengs C;Levitt MH
通讯作者:
Levitt MH