High-field NMR with dissolution triplet-DNP
High-field NMR with dissolution triplet-DNP
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DOI：
10.1016/j.jmr.2019.106623
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发表时间：
2019-12-01
影响因子：
2.2
通讯作者：
Kitagawa, Masahiro
中科院分区：
文献类型：
--
作者：
Kagawa, Akinori;Miyanishi, Koichiro;Kitagawa, Masahiro
溶解动态核极化（DNP）在化学反应的实时监测和代谢成像等方面有着广泛的重要应用。我们利用光激发三重电子自旋（triple -DNP）装置结合高磁场溶液核磁共振溶解装置构建了DNP。三重态- dnp使我们能够在室温下获得高的核极化。固体样品被三重- dnp极化转移到超导磁体，并通过注入水溶剂溶解。[羧基-C-13]苯甲酸-d在液态下的C-13极化率为0.22%。结果表明，Triplet-DNP可以应用于溶液核磁共振实时监测。(C) 2019 Elsevier Inc.版权所有。
Dissolution dynamic nuclear polarization (DNP) has wide variety of important applications such as real-time monitoring of chemical reactions and metabolic imaging. We construct DNP using photoexcited triplet electron spins (Triplet-DNP) apparatus combined with dissolution apparatus for solution NMR in a high magnetic field. Triplet-DNP enables us to obtain high nuclear polarization at room temperature. Solid-state samples polarized by Triplet-DNP are transferred to a superconducting magnet and dissolved by injecting aqueous solvents. The C-13 polarization of 0.22% has been obtained for [caryboxy-C-13]benzoic acid-d in the liquid state. Our results show that Triplet-DNP can be applied to real-time monitoring with solution NMR. (C) 2019 Elsevier Inc. All rights reserved.