Improvements to selective refocusing phased (SERFph) experiments

被引：19

作者：

Beguin, L. ^{[1
]}

Giraud, N. ^{[1
]}

Ouvrard, J. M. ^{[1
]}

Courtieu, J. ^{[1
]}

Merlet, D. ^{[1
]}

机构：

[1] Univ Paris 11, Lab RMN Milieu Oriente, ICMMO, CNRS,UMR 8182, F-91405 Orsay, France

来源：

JOURNAL OF MAGNETIC RESONANCE | 2009年 / 199卷 / 01期

关键词：

Selective refocusing; Residual dipolar coupling; NMR in oriented media; Chiral liquid crystal; LIQUID-CRYSTAL; NMR-SPECTROSCOPY; ENANTIOMERIC ANALYSIS; SOLVENTS;

D O I：

10.1016/j.jmr.2009.03.012

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Selective refocusing experiments are very powerful for extracting proton-proton couplings one by one. However we demonstrate in the present work that various spectral artefacts are produced by the initial sequence and we show that the combined addition of a refocusing IT pulse and a zero-quantum filter greatly improves the experimental sensitivity, and moreover leads to observation of pure absorption line-shapes in the resulting phased 2D spectrum. These developments are applied to the differentiation of enantiomers dissolved in a chiral liquid crystal, (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：41 / 47

页数：7

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