It is shown that a direct spectral optimization scheme can be implemented to obtain improved heteronuclear dipolar decoupling schemes for solid-state magic-angle-spinning NMR experiments. The resulting schemes, which turn out to have a particularly simple form, are shown to be applicable over the wh
Increasing the robustness of heteronuclear decoupling in magic-angle sample spinning solid-state NMR
โ Scribed by Guillaume Gerbaud; Fabio Ziarelli; Stefano Caldarelli
- Book ID
- 104108337
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 282 KB
- Volume
- 377
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Proton decoupling is a crucial step to obtain high-resolution NMR spectra of macromolecules. Current methods employ phase (or amplitude)-modulated radio-frequency pulses to this end. To be effective, the modulation has to match some resonant condition. We demonstrate in this Communication a simple approach to expand the stability of the resonant condition by convolution of the basic modulation with a Gaussian envelope.
๐ SIMILAR VOLUMES
The use of a low-power two-pulse phase modulation (TPPM) sequence is proposed for efficient 1 H radio frequency (rf) decoupling in high-resolution 13 C solid-state NMR (SSNMR) under fast MAS conditions. Decoupling efficiency for different low-power decoupling sequences such as continuous-wave (cw),