TOSNER, Z., M.J. BRANDL, J. BLAHUT, S.J. GLASER a B. REIF. Maximizing efficiency of dipolar recoupling in solid-state NMR using optimal control sequences. Science advances. New York: American Association for the Advancement of Science, 2021, roč. 7, č. 42, s. 1-10. ISSN 2375-2548. Dostupné z: https://dx.doi.org/10.1126/sciadv.abj5913. |
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@article{1842565, author = {Tosner, Z. and Brandl, M.J. and Blahut, J. and Glaser, S.J. and Reif, B.}, article_location = {New York}, article_number = {42}, doi = {http://dx.doi.org/10.1126/sciadv.abj5913}, keywords = {AMPLITUDE CROSS-POLARIZATION; NUMERICAL-SIMULATION; DOUBLE-RESONANCE; SPECTROSCOPY; RESOLUTION; DESIGN; PULSES; WAVE; NCO}, language = {eng}, issn = {2375-2548}, journal = {Science advances}, title = {Maximizing efficiency of dipolar recoupling in solid-state NMR using optimal control sequences}, url = {https://www.science.org/doi/10.1126/sciadv.abj5913}, volume = {7}, year = {2021} }
TY - JOUR ID - 1842565 AU - Tosner, Z. - Brandl, M.J. - Blahut, J. - Glaser, S.J. - Reif, B. PY - 2021 TI - Maximizing efficiency of dipolar recoupling in solid-state NMR using optimal control sequences JF - Science advances VL - 7 IS - 42 SP - 1-10 EP - 1-10 PB - American Association for the Advancement of Science SN - 23752548 KW - AMPLITUDE CROSS-POLARIZATION KW - NUMERICAL-SIMULATION KW - DOUBLE-RESONANCE KW - SPECTROSCOPY KW - RESOLUTION KW - DESIGN KW - PULSES KW - WAVE KW - NCO UR - https://www.science.org/doi/10.1126/sciadv.abj5913 N2 - Dipolar recoupling is a central concept in the nuclear magnetic resonance spectroscopy of powdered solids and is used to establish correlations between different nuclei by magnetization transfer. The efficiency of conventional cross-polarization methods is low because of the inherent radio frequency (rf) field inhomogeneity present in the magic angle spinning (MAS) experiments and the large chemical shift anisotropies at high magnetic fields. Very high transfer efficiencies can be obtained using optimal control-derived experiments. These sequences had to be optimized individually for a particular MAS frequency. We show that by adjusting the length and the rf field amplitude of the shaped pulse synchronously with sample rotation, optimal control sequences can be successfully applied over a range of MAS frequencies without the need of reoptimization. This feature greatly enhances their applicability on spectrometers operating at differing external fields where the MAS frequency needs to be adjusted to avoid detrimental resonance effects. ER -
TOSNER, Z., M.J. BRANDL, J. BLAHUT, S.J. GLASER a B. REIF. Maximizing efficiency of dipolar recoupling in solid-state NMR using optimal control sequences. \textit{Science advances}. New York: American Association for the Advancement of Science, 2021, roč.~7, č.~42, s.~1-10. ISSN~2375-2548. Dostupné z: https://dx.doi.org/10.1126/sciadv.abj5913.
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