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Gradient- and Sensitivity-Enhanced TOCSY Experiments |
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| Authors: | Katalin E Kövér Dušan Uhr?&#x;n Victor J Hruby |
| Institution: | aDepartment of Organic Chemistry, L. Kossuth University, P.O. Box 20, H-4010, Debrecen, Hungary;bDepartment of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom;cDepartment of Chemistry, University of Arizona, Tucson, Arizona, 85721 |
| Abstract: | A pulsed field gradient version of the sensitivity-enhanced 2D TOCSY experiment is proposed which yields high-quality spectra with improved sensitivity and a minimum of two scans pert1increment. For rapid acquisition of 1D TOCSY spectra, the 1D DPFGSE–TOCSY experiment was modified to include phase-encoded multiple-selective excitation followed by a simple spectral editing. Combination of these two building blocks is used in a sensitivity-enhanced 2D analog of the 3D TOCSY–TOCSY experiment which provides an efficient tool for resolving severely overlapped signals of oligomers in short experimental time. |
| Keywords: | gradient version of 2D TOCSY sensitivity enhancement echo&ndash antiecho selection 1D DPFGSE&ndash TOCSY multiple-selective excitation 2D analog of 3D TOCSY&ndash TOCSY |
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