Spatially encoded diffusion-ordered NMR spectroscopy of reaction mixtures in organic solvents

被引：16

作者：

Hamdoun, Ghanem ^{[1
]}

Guduff, Ludmilla ^{[1
]}

van Heijenoort, Carine ^{[1
]}

Bour, Christophe ^{[2
]}

Gandon, Vincent ^{[2
]}

Dumez, Jean-Nicolas ^{[1
]}

机构：

[1] Univ Paris Saclay, Univ Paris Sud, CNRS UPR2301, Inst Chim Subst Nat, F-91190 Gif Sur Yvette, France

[2] Univ Paris Saclay, Univ Paris Sud, CNRS UMR 8182, Inst Chim Mol & Mat Orsay, F-91405 Orsay, France

来源：

ANALYST | 2018年 / 143卷 / 14期

关键词：

DOSY-NMR; FIELD GRADIENT; COEFFICIENTS; EQUILIBRIUM; COMPLEXES;

D O I：

10.1039/c8an00434j

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Diffusion-ordered NMR spectroscopy (DOSY) is a powerful method for the analysis of mixtures. Classic DOSY methods require several minutes of acquisition, and we show here that DOSY experiments can be recorded in less than one second for the challenging case of solution mixtures in low-viscosity solvents. The proposed method relies on a spatial encoding of the diffusion dimension, for which convection-compensation and spectral-selection strategies are introduced. The method is illustrated with the analysis of a reaction mixture, and more accurate estimates of the diffusion coefficients are obtained.

引用

页码：3458 / 3464

页数：7

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