Separated local field NMR spectroscopy by windowless isotropic mixing
Separated local field NMR spectroscopy by windowless isotropic mixing
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DOI：
10.1016/j.cplett.2005.11.076
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发表时间：
2006-02-15
影响因子：
2.8
通讯作者：
Ramamoorthy, A
中科院分区：
文献类型：
--
作者：
Dvinskikh, SV;Yamamoto, K;Ramamoorthy, A
描述了一种新的用于精确测量异核偶极耦合的分离局域核磁共振实验。该脉冲序列基于同核去耦合、无窗异核各向同性混合方法，实现了异核自旋系统中磁化的z分量之间的相干极化交换。该技术抑制化学位移和频率偏移变化，而与偶极耦合值无关。实验是在柱状液体上进行的。克里斯托。(C)2005 Elsevier B.V.保留所有权利。
A new separated local field NMR experiment, designed for accurate measurements of heteronuclear dipolar couplings, is described. The pulse sequence is based on a homonuclear decoupling windowless heteronuclear isotropic mixing approach to achieve the coherent polarization exchange between the z-components of the magnetizations in heteronuclear spin system. This technique suppresses chemical shifts and frequency offset variations irrespective of the dipolar coupling value. The experiment is demonstrated on a columnar liquid. crystal. (c) 2005 Elsevier B.V. All rights reserved.