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(33)S MAS NMR of a disordered sulfur-doped silicate: signal enhancement via RAPT, QCPMG and adiabatic pulses
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O'Dell, L. A., Klimm, K., Freitas, J. C. C., Kohn, S. C. and Smith, Mark E.. (2009) (33)S MAS NMR of a disordered sulfur-doped silicate: signal enhancement via RAPT, QCPMG and adiabatic pulses. Applied Magnetic Resonance, Vol.35 (No.2). pp. 247-259. ISSN 0937-9347
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Official URL: http://dx.doi.org/10.1007/s00723-008-0159-8
Abstract
Three different signal enhancement techniques have been applied to (33)S magic-angle spinning nuclear magnetic resonance (MAS NMR) of a disordered silicate containing 1.15 wt% (33)S. Partial saturation of the satellite transitions was achieved using a rotor-assisted population transfer (RAPT) pulse sequence, resulting in a signal enhancement of 1.63, albeit with a slight distortion of the line shape due to selective excitation. Adiabatic inversion of the satellite transitions by various amplitude-and frequency-modulated pulse shapes (such as hyperbolic secant and wideband uniform-rate smooth truncation) was also attempted, resulting in a signal enhancement of up to 1.85, with no apparent line shape distortion. Quadrupolar Carr-Purcell-Meiboom-Gill (QCPMG) and RAPT-QCPMG sequences were also used, both of which yielded spikelet spectra that accurately reflected the MAS line shape with a greatly improved signal-to-noise ratio. It is hoped that this study demonstrates that (33)S solid-state MAS NMR is now feasible even on disordered, low-sulfur-content systems.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Administration > Vice Chancellor's Office Faculty of Science > Physics |
| Journal or Publication Title: | Applied Magnetic Resonance |
| Publisher: | Springer |
| ISSN: | 0937-9347 |
| Date: | February 2009 |
| Volume: | Vol.35 |
| Number: | No.2 |
| Number of Pages: | 13 |
| Page Range: | pp. 247-259 |
| Identification Number: | 10.1007/s00723-008-0159-8 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Natural Environment Research Council (Great Britain) (NERC), British Council Academic Research Collaboration, Engineering and Physical Sciences Research Council (EPSRC), University of Warwick |
| Grant number: | NE/C510967/1, 1280 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/28073 |
Data sourced from Thomson Reuters' Web of Knowledge
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