Assessing the performance of windowed H-1 CRAMPS methods, on biological solids, at high-field and MAS up to 35 kHz
authors Mafra, L; Coelho, C; Siegel, R; Rocha, J
nationality International
journal JOURNAL OF MAGNETIC RESONANCE
author keywords High-resolution H-1 CRAMPS; Solid-state NMR; Homonuclear decoupling; Homonuclear interaction; H-1-H-1 dipolar couplings; wDUMBO; wPMLG3; High-field NMR; Very-fast MAS
keywords NUCLEAR-MAGNETIC-RESONANCE; HIGH-RESOLUTION H-1-NMR; MULTIPLE-PULSE NMR; ANGLE-SPINNING NMR; STATE NMR; DECOUPLING SEQUENCES; SPECTROSCOPY; ROTATION; SYMMETRY
abstract The performance of various high-resolution 1D H-1 CRAMPS pulse schemes at moderate and high static magnetic fields (400 MHz and 800 H-1 Larmor frequencies) and spinning rates up to 35 kHz, using state-of-the-art electronics is compared. The performance of the H-1 windowed acquisition decoupling schemes, wDUMBO, wPMLG3 and wSAM3 is investigated using their effective z-rotation variants on glycine and other small biological molecules, tripeptide reduced glutathione and nucleoside uridine. H-1 CRAMPS spectra, recorded with windowed H-1-H-1 decoupling methods and fast MAS (35 kHz) and high-field are reported for the first time. H-1 spectra exhibiting outstanding resolution and completely free from any artifact are also shown. The effect on spectra quality of the decoupling rf cycle and rotor periods ratio (tau(C)/tau(R)) and the power requirements needed for each windowed H-1 CRAMPS methods are discussed. (C) 2008 Elsevier Inc. All Fights reserved.
publisher ACADEMIC PRESS INC ELSEVIER SCIENCE
issn 1090-7807
year published 2009
volume 197
issue 1
beginning page 20
ending page 27
digital object identifier (doi) 10.1016/j.jmr.2008.11.010
web of science category Biochemical Research Methods; Physics, Atomic, Molecular & Chemical; Spectroscopy
subject category Biochemistry & Molecular Biology; Physics; Spectroscopy
unique article identifier WOS:000263987500004
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