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Journal of Biomolecular NMR

, Volume 35, Issue 4, pp 241–248 | Cite as

Solid state NMR at high magic angle spinning frequencies: Dipolar chemical shift correlation with adiabatic inversion pulse based RF pulse schemes

  • Christian Herbst
  • Kerstin Riedel
  • Jörg Leppert
  • Oliver Ohlenschläger
  • Matthias Görlach
  • Ramadurai Ramachandran
Article

Abstract

The efficacy of hetero- and homonuclear dipolar recoupling employing tanh/tan adiabatic inversion pulse based RF pulse schemes has been examined at high magic angle spinning (MAS) frequencies via numerical simulations and experimental measurements. An approach for minimising the recoupling RF power level is presented, taking into consideration the spinning speed, the range of resonance offsets and H1 inhomogeneities and the available RF field strength. This involves the tailoring of the frequency and amplitude modulation profiles of the inversion pulses. The applicability of tanh/tan pulse based dipolar recoupling schemes to spinning speed regimes where the performance with conventional rectangular pulses may not be satisfactory is demonstrated.

Keywords

adiabatic pulse chemical shift correlation MAS solid state NMR 

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Notes

Acknowledgements

This study has been funded in part by a PhD fellowship to Kerstin Riedel from Stiftung Stipendien-Fonds des Verbandes der Chemischen Industrie e.V.

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Copyright information

© Springer 2006

Authors and Affiliations

  • Christian Herbst
    • 1
  • Kerstin Riedel
    • 1
  • Jörg Leppert
    • 1
  • Oliver Ohlenschläger
    • 1
  • Matthias Görlach
    • 1
  • Ramadurai Ramachandran
    • 1
  1. 1.Molecular Biophysics/NMR spectroscopy group, Leibniz Institute for Age ResearchFritz Lipmann InstituteJenaGermany

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