The effect of RF power and spinning speed on MQMAS NMR

Journal of Magnetic Resonance
J P AmoureuxC Fernandez

Abstract

It is known that the patterns of spinning sidebands observed in the multiple-quantum dimension of MQMAS spectra are often significantly wider than expected from the anisotropies of relevant interactions. It has been recently shown by others that these sidebands are generated due to the rotor-driven reorientations that the quadrupole tensors of the crystallites undergo during the evolution period between the multiple- and single-quantum conversion processes. We present an experimental and theoretical study of the effects of the spinning speed nuR and RF field strength nuRF on the development of these sideband patterns. The theoretical analysis relies upon numerical simulations and includes propagation of the density matrix during the entire MQMAS experiment. The possibility of additional rotational encoding during the RF pulses is discussed. Both the theoretical and experimental results show the benefits of using the highest available nuR and nuRF. Copyright 1998 Academic Press.

References

Dec 15, 1973·Molecular and Cellular Biochemistry·B FrydmanM L Tomaro
Apr 1, 1993·Solid State Nuclear Magnetic Resonance·J P Amoureux
Feb 1, 1996·Solid State Nuclear Magnetic Resonance·D MassiotP J Grandinetti
Nov 1, 1996·Journal of Magnetic Resonance. Series a·J P AmoureuxS Steuernagel

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Citations

Aug 11, 2007·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Yuichi ShimoikedaToshihito Nakai
Jul 30, 2010·Progress in Nuclear Magnetic Resonance Spectroscopy·Redouane HajjarPascal P Man
May 6, 2008·Journal of Magnetic Resonance·Edward W HagamanTony Moore
Jan 15, 2005·Journal of Magnetic Resonance·J P AmoureuxL Montagne
May 14, 2004·Journal of Magnetic Resonance·Zhehong Gan, Hyung-Tae Kwak
Sep 2, 2000·Journal of Magnetic Resonance·S M De PaulH W Spiess
Feb 16, 2002·Journal of Magnetic Resonance·Kwang Hun LimAlexander Pines
Feb 16, 2002·Journal of Magnetic Resonance·Amir Goldbourt, Shimon Vega
Jul 10, 2020·Solid State Nuclear Magnetic Resonance·Akiko SasakiJean-Paul Amoureux
Jun 25, 2021·Chemical Science·Sharon E AshbrookCameron M Rice
Feb 20, 2020·The Journal of Physical Chemistry. B·Alina NizamutdinovaLeo van Wüllen
Sep 13, 2001·Journal of the American Chemical Society·G Wu, S Dong

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