Articles | Volume 2, issue 1
https://doi.org/10.5194/mr-2-447-2021
https://doi.org/10.5194/mr-2-447-2021
Research article
 | 
17 Jun 2021
Research article |  | 17 Jun 2021

Improved NMR transfer of magnetization from protons to half-integer spin quadrupolar nuclei at moderate and high magic-angle spinning frequencies

Jennifer S. Gómez, Andrew G. M. Rankin, Julien Trébosc, Frédérique Pourpoint, Yu Tsutsumi, Hiroki Nagashima, Olivier Lafon, and Jean-Paul Amoureux

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Latest update: 13 Jun 2024
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Short summary
The transfer of polarization from protons to half-integer spin quadrupolar nuclei provides insights into the proximities between these nuclei. We analyse the best transfers at 20 and 62 kHz MAS obtained with RINEPT and PRESTO recouplings using adiabatic or composite π pulses. The 1H magnetization is best transferred using PRESTO-R22,7,2 (180) or -R16,6,7 (270,90) at 20 or 62 kHz MAS, respectively, and RINEPT-SR4,2,1 (270,90).