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Homonuclear dipolar decoupling under fast MAS: Resolution patterns and simple optimization strategy

TitleHomonuclear dipolar decoupling under fast MAS: Resolution patterns and simple optimization strategy
Publication TypeJournal Article
Year of Publication2010
AuthorsMao K, Pruski M
Journal TitleJournal of Magnetic Resonance
Volume203
Pages144-149
Date Published03/01
ISBN Number1090-7807
Accession NumberISI:000274921000016
Keywords65 khz, cramps, enhanced resolution, fast mas, h-1-nmr, homonuclear decoupling, multiple-pulse nmr, nuclear-magnetic-resonance, optimization, pmlg, PROTON NMR, rotation, SEQUENCES, solid-state nmr, spectroscopy
Abstract

A simple method is shown for optimization of H-1 homonuclear dipolar decoupling at MAS rates exceeding 10 kHz By monitoring the intensity of a spin-echo tinder the decoupling conditions. it is possible to optimize the amplitude of the RF magnetic field, the cycle time of the decoupling sequence and the resonance offset within minutes As a result, the decoupling efficiency can be quickly and reliably fine-tuned Without using a reference sample. The utility of this method has been confirmed by studying the resolution patterns for the supercycled PMLG scheme, which were found to be in excellent agreement with earlier theoretical predictions and verified in high-resolution 2D H-1-H-1 experiments (C) 2009 Elsevier Inc All rights reserved
URL<Go to ISI>://000274921000016
DOIDoi 10.1016/J.Jmr.2009.12.013