Combining STMAS and CRAMPS NMR spectroscopy: High-resolution HETCOR NMR spectra of quadrupolar and H-1 nuclei in solids
authors Siegel, R; Rocha, J; Mafra, L
nationality International
journal CHEMICAL PHYSICS LETTERS
keywords QUANTUM CROSS-POLARIZATION; ANGLE-SPINNING NMR; STATE NMR; MQMAS NMR; HETERONUCLEAR CORRELATION; MAS NMR; SENSITIVITY ENHANCEMENT; AMPLITUDE-MODULATION; MAGNETIC-RESONANCE; IST-1
abstract High-resolution two-dimensional (2D) heteronuclear correlation spectra between half-integer quadrupolar and H-1 nuclei have been obtained combining Satellite Transition Magic-Angle Spinning (STMAS) and wPMLG3 CRAMPS methods. The experiments use split-t(1) versions of DQ/DQF-STMAS adapted to 3/2 and 5/2 spins to obtain a Na-23 and Al-27 isotropic dimension, respectively. Transfer of magnetization from quadrupolar nuclei to protons has been achieved by cross-polarization, and high-resolution H-1 spectra have been recorded using the wPMLG3 decoupling during the t(2) evolution period. The performance of the pulse sequences have been tested on the templated microporous aluminophosphate IST-1 and trisodium citrate employing a B-0 field of 9.4 T. (C) 2009 Elsevier B. V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0009-2614
year published 2009
volume 470
issue 4-6
beginning page 337
ending page 341
digital object identifier (doi) 10.1016/j.cplett.2009.01.053
web of science category Chemistry, Physical; Physics, Atomic, Molecular & Chemical
subject category Chemistry; Physics
unique article identifier WOS:000263791700036
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