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Titolo:
The effect of RF inhomogeneity on heteronuclear dipolar recoupling in solid state NMR: Practical performance of SFAM and REDOR
Autore:
Nishimura, K; Fu, RQ; Cross, TA;
Indirizzi:
Natl High Magnet Field Lab, Ctr Interdisciplinary Magnet Resonance, Tallahassee, FL 32310 USA Natl High Magnet Field Lab Tallahassee FL USA 32310 ahassee, FL 32310 USA Florida State Univ, Dept Chem, Tallahassee, FL 32310 USA Florida State Univ Tallahassee FL USA 32310 em, Tallahassee, FL 32310 USA Florida State Univ, Inst Mol Biophys, Tallahassee, FL 32310 USA Florida State Univ Tallahassee FL USA 32310 ys, Tallahassee, FL 32310 USA
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE
fascicolo: 2, volume: 152, anno: 2001,
pagine: 227 - 233
SICI:
1090-7807(200110)152:2<227:TEORIO>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANGLE-SPINNING NMR; DOUBLE-RESONANCE NMR; PRO-GLY-PHE; 3-DIMENSIONAL STRUCTURE; INTERATOMIC DISTANCES; ROTATIONAL RESONANCE; SPECTROSCOPY; COUPLINGS; DYNAMICS; FIELD;
Keywords:
solid state NMR; rf inhomogeneity; dipolar recoupling; SFAM; REDOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Cross, TA Natl High Magnet Field Lab, Ctr Interdisciplinary Magnet Resonance, 1800 EPaul Dirac Dr, Tallahassee, FL 32310 USA Natl High Magnet Field Lab 1800 E Paul Dirac Dr Tallahassee FL USA 32310
Citazione:
K. Nishimura et al., "The effect of RF inhomogeneity on heteronuclear dipolar recoupling in solid state NMR: Practical performance of SFAM and REDOR", J MAGN RES, 152(2), 2001, pp. 227-233

Abstract

Practical heteronuclear dipolar recoupling performances under magic angle spinning for SFAM and REDOR have been investigated under well-defined rf inhomogeneity environments with variation of resonance offsets for the irradiated nucleus. The heteronuclear dipolar recoupling efficiencies were quantitatively determined based on the experimentally obtained rf homogeneity. Asa result, SFAM retains higher recoupling efficiency (>95%) at an 85% effective nutation frequency, and its recoupling efficiency is gradually reducedat lower effective nutation frequencies. On the other hand, although REDORretains higher recoupling (>95%) efficiency at high (>92%) effective nutation frequency with an XY-8 compensation pulse sequence, the recoupling efficiency is dramatically decreased when the effective nutation frequency is below 90%. Over all, SFAM has significant advantages for insensitivity to carrier frequency offset and rf inhomogeneity. (C) 2001 Academic Press.

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Documento generato il 09/04/20 alle ore 13:28:53