NMR polarization transfer by second-order resonant recoupling: RESORT

被引：23
作者：
Scholz, Ingo [1 ]
Meier, Beat H. [1 ]
Ernst, Matthias [1 ]
机构：
[1] ETH, CH-8093 Zurich, Switzerland
来源：
CHEMICAL PHYSICS LETTERS | 2010年 / 485卷 / 4-6期
基金：
瑞士国家科学基金会;
关键词：
SOLID-STATE NMR; NUCLEAR-MAGNETIC-RESONANCE; ANGLE-SPINNING NMR; PROTEIN-STRUCTURE DETERMINATION; ROTATING SOLIDS; ROTARY RESONANCE; CROSS-POLARIZATION; MAS NMR; SPECTROSCOPY; DIFFUSION;
D O I：
10.1016/j.cplett.2009.12.044
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We describe a resonant second-order dipolar recoupling condition for magic-angle spinning (MAS) solid-state NMR where the active spins are irradiated by continuous-wave irradiation and the passive spins by a phase-alternating sequence. The phase-modulation frequency is matched to an integer multiple of the MAS frequency to produce a second-order homonuclear dipolar coupling Hamiltonian that promotes broadband homonuclear zero-quantum polarization transfer on the spin-locked active spins. The recoupling sequence is based on second-order cross terms between two heteronuclear dipolar couplings. Similarities and differences to the proton-assisted recoupling sequence are discussed. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：335 / 342
页数：8
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