MIRROR recoupling and its application to spin diffusion under fast magic-angle spinning

被引：95

作者：

Scholz, Ingo ^{[1
]}

Huber, Matthias ^{[1
]}

Manolikas, Theofanis ^{[1
]}

Meier, Beat H. ^{[1
]}

Ernst, Matthias ^{[1
]}

机构：

[1] ETH, CH-8039 Zurich, Switzerland

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 460卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2008.05.058

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 introduce a second-order dipolar recoupling condition for magic-angle spinning NMR where the isotropic chemical-shift difference of two homonuclear S spins is matched by the rf-irradiation amplitude, or, alternatively, phase-modulation frequency, on a heteronuclear spin. The experiment can be looked at as a mixed rotational and rotary-resonance condition ( MIRROR). The effective MIRROR Hamiltonian promotes homonuclear zero-quantum polarization transfer and heteronuclear zero-quantum and double-quantum polarization transfer. The MIRROR recoupling condition is applied to obtain enhanced polarization transfer through spin diffusion (MIRROR-SD) and to establish through-space neighborhood of spins at high MAS frequencies. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：278 / 283

页数：6

共 27 条

[1] ON THE INTERACTION OF NUCLEAR SPINS IN A CRYSTALLINE LATTICE [J].