Development of a magic-angle spinning nuclear magnetic resonance probe with a cryogenic detection system for sensitivity enhancement.
Development of a magic-angle spinning nuclear magnetic resonance probe with a cryogenic detection system for sensitivity enhancement.
复制标题
开发具有低温检测系统的魔角旋转核磁共振探针，以提高灵敏度。
DOI：
10.1063/1.2912946
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
K. Takegoshi
中科院分区：
文献类型：
--
作者：
T. Mizuno;K. Hioka;K. Fujioka;K. Takegoshi
研制了一种新型的高分辨固体核磁共振探针。在该探头中，为了提高灵敏度，检测线圈的温度保持在低温（约12K），这不仅通过抑制热噪声而且通过增加线圈的Q因子来实现。该探头的一个显著特点是，以魔角旋转的样品与低温系统热隔离，以实现在各种样品温度下的高分辨率固态NMR测量。我们称这种系统为cryocoil魔角自旋（cryocoil MAS）。(1)H MAS NMR线圈温度约为20 K的固体金刚烷在室温下旋转，成功地观察到，由于这种cryocoil方法的信号噪声增量得到证实。
A novel nuclear magnetic resonance (NMR) probe for high-resolution solid-state NMR has been developed. In this probe, temperature of the detection coil is kept at cryogenic temperature (approximately 12 K) for sensitivity enhancement, which is achieved not only by suppression of thermal noise but also by increment of a Q factor of the coil. A marked feature of this probe is that a sample rotating at magic angle is thermally isolated from the cryogenic system in order to realize high-resolution solid-state NMR measurement at various sample temperatures. We call this system as cryocoil magic-angle spinning (cryocoil MAS). (1)H MAS NMR with the coil temperature of approximately 20 K was successfully observed for solid adamantane rotating at room temperature, and signal-to-noise increment due to this cryocoil approach was confirmed.
影响因子：
15
作者：
Kelly, AE;Ou, HD;Dötsch, V
通讯作者：
Dötsch, V