Modified, pulse field gradient-enhanced inverse-detected HOESY pulse sequence for reduction of t1 spectral artifacts

被引：25

作者：

Alam, TM ^{[1
]}

Pedrotty, DM

Boyle, TJ

机构：

[1] Sandia Natl Labs, Dept Organ Mat, Albuquerque, NM 87185 USA

[2] Sandia Natl Labs, Dept Chem Mat, Albuquerque, NM 87106 USA

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 2002年 / 40卷 / 05期

关键词：

NMR; HOESY; H-1; Li-7; inverse-detected; gradient-enhanced; pulse field gradient;

D O I：

10.1002/mrc.1019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A modified pulse field gradient (PFG)-enhanced inverse (H-1)-detected 2D heteronuclear Overhauser effect spectroscopy (HOESY) pulse sequence is demonstrated for the acquisition of H-1-Li-7 heteronuclear correlations. In practice, t(1) noise artifacts were observed using the original PFG-enhanced inverse-detected HOESY pulse sequence, which degraded the ability to detect accurately weak heteronuclear Overhauser signals. Experimentally it is shown that a simple modification of the PFG-enhanced inverse-detected HOESY pulse sequence greatly reduces the t(1) noise that may result from variations in magnetic susceptibility, and allows improved detection of weak H-1-Li-7 correlations. Copyright (C) 2002 John Wiley Sons, Ltd.

引用

页码：361 / 365

页数：7