Measurement of heteronuclear dipolar couplings using a rotating frame solid-state NMR experiment
Measurement of heteronuclear dipolar couplings using a rotating frame solid-state NMR experiment
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DOI：
10.1016/j.cplett.2005.12.012
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发表时间：
2006-02-26
影响因子：
2.8
通讯作者：
Ramamoorthy, A
中科院分区：
文献类型：
--
作者：
Yamamoto, K;Dvinskikh, SV;Ramamoorthy, A
提出了一种新的核磁共振实验来测量固态异核偶极耦合。在这种技术中，基于多脉冲序列的自旋锁，BLEW，用于在两个射频通道，以抑制化学位移和homopolitan偶极耦合相互作用。零阶平均哈密顿量的自旋部分在共振时是各向同性的，并且呈现异相各向同性混合，导致通过局部场（HIMSELF）的自旋交换，用于磁化的同相转移。在BLEW序列结束时通过180度脉冲补偿偏移频率依赖性。理论，模拟和实验结果表明HIMSELF技术的性能报告。(c)2005 Elsevier B.V.保留所有权利。
A new NMR experiment to measure heteronuclear dipolar couplings in the solid-state is proposed. In this technique, a spin-lock based on a multiple pulse sequence, BLEW, is used in both the radio frequency channels to suppress the chemical shift and homonuclear dipolar coupling interactions. The spin part of the zeroth-order average Hamiltonian is isotropic at on-resonance and renders the heteronuclear isotropic mixing leading to spin exchange via the local field (HIMSELF) for an in phase transfer of magnetization. The offset frequency dependence is compensated by a 180 degrees pulse at the end of a BLEW sequence. Theoretical, simulated and experimental results demonstrating the performance of the HIMSELF technique are reported. (c) 2005 Elsevier B.V. All rights reserved.