Spin-state selection in solid-state NMR

• Published in: JOURNAL OF MAGNETIC RESONANCE (ISSN: 1090-7807), vol. 164, num. 1, p. 187-195
• ACADEMIC PRESS INC ELSEVIER SCIENCE, 2003

Spin-state selection in solid-state NMR is demonstrated, using similar pulse sequences as used in liquid-state NMR. The different transitions of all three carbon resonances in fully C-13-labeled L-alanine are separated in different spectra. By selecting spin-states, the contribution of the J-coupling to the linewidth is removed, leading to a considerable enhancement in resolution. The spin-state-selective technique is demonstrated for magic-angle spinning frequencies from 6 to 35 kHz. Other experimental conditions affecting the sensitivity of the experiments are discussed. Sensitivity losses due to the introduction of the spin-state-selective filter are shown to be acceptable. Finally, spin-state selection was used to experimentally confirm the differential broadening expected for the two transitions of the CH3 resonance. (C) 2003 Elsevier Science (USA). All rights reserved.

Keywords: spin state ; IPAP ; J-coupling ; homonuclear ; solid-state NMR ; MAS

Reference

• EPFL-ARTICLE-204435
• doi:10.1016/S1090-7807(03)00187-3
• View record in Web of Science

Record created on 2015-01-08, modified on 2017-05-12