J 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.

Basic information

Original name

Maximizing efficiency of dipolar recoupling in solid-state NMR using optimal control sequences

Authors

TOSNER, Z., M.J. BRANDL, J. BLAHUT, S.J. GLASER and B. REIF

Edition

Science advances, New York, American Association for the Advancement of Science, 2021, 2375-2548

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10300 1.3 Physical sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 14.957

RIV identification code

RIV/00216224:14740/21:00124435

Organization unit

Central European Institute of Technology

DOI

http://dx.doi.org/10.1126/sciadv.abj5913

UT WoS

000707571700032

Keywords in English

AMPLITUDE CROSS-POLARIZATION; NUMERICAL-SIMULATION; DOUBLE-RESONANCE; SPECTROSCOPY; RESOLUTION; DESIGN; PULSES; WAVE; NCO

Tags

CF NMR, ne MU, rivok

Tags

International impact, Reviewed
Změněno: 23/3/2022 10:02, Mgr. Pavla Foltynová, Ph.D.

Abstract

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.

Links

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