2021
Maximizing efficiency of dipolar recoupling in solid-state NMR using optimal control sequences
TOSNER, Z., M.J. BRANDL, J. BLAHUT, S.J. GLASER, B. REIF et. al.Základní údaje
Originální název
Maximizing efficiency of dipolar recoupling in solid-state NMR using optimal control sequences
Autoři
TOSNER, Z., M.J. BRANDL, J. BLAHUT, S.J. GLASER a B. REIF
Vydání
Science advances, New York, American Association for the Advancement of Science, 2021, 2375-2548
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10300 1.3 Physical sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 14.957
Kód RIV
RIV/00216224:14740/21:00124435
Organizační jednotka
Středoevropský technologický institut
UT WoS
000707571700032
Klíčová slova anglicky
AMPLITUDE CROSS-POLARIZATION; NUMERICAL-SIMULATION; DOUBLE-RESONANCE; SPECTROSCOPY; RESOLUTION; DESIGN; PULSES; WAVE; NCO
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 23. 3. 2022 10:02, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
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.
Návaznosti
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