Abstract
This article describes the development and use of pulsed field gradients in high-resolution NMR. The development of actively shielded gradients led to a rapid expansion of applications, including the gradient-enhanced selection of coherence pathways, improved water suppression, diffusion editing of NMR mixtures, and ultrafast 2D NMR methods. The replacement of time-consuming phase-cycling with gradient coherence selection and the advances made possible by spatial and motion sensitivity imparted by gradient pulses are discussed. The strategy for incorporating gradients into pulse sequences as well as preserving phase sensitive multidimensional peak shapes is presented. Keywords: pulsed-field gradients; gradient-enhanced spectroscopy; DOSY; coherence selection; diffusion; actively shielded gradients; ultrafast-2D NMR
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