Radio frequency assisted homonuclear recoupling - A Floquet description of homonuclear recoupling via surrounding heteronuclei in fully protonated to fully deuterated systems

  • Michal Leskes
  • , Ümit Akbey
  • , Hartmut Oschkinat
  • , Barth Jan Van Rossum
  • , Shimon Vega*
  • *Corresponding author for this work

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

    18 Citations (Scopus)

    Abstract

    We present a Floquet theory approach for the analysis of homonuclear recoupling assisted by radio frequency (RF) irradiation of surrounding heteronuclear spins. This description covers a broad range of systems from fully protonated to deuterated proteins, focusing in detail on recoupling via protons and deuterons separately as well as simultaneously by the double nucleus enhanced recoupling (DONER) scheme. The theoretical description, supported by numerical simulations and compared to experimental results from a partially deuterated model compound, indicates that in perdeuterated systems setting the RF amplitude equal to the magic angle spinning (MAS) frequency is not necessarily optimal for recoupling via 1H and/or 2H nuclei and modified recoupling conditions are identified.

    Original languageEnglish
    JournalJournal of Magnetic Resonance
    Volume209
    Issue2
    Pages (from-to)207-219
    Number of pages13
    ISSN1090-7807
    DOIs
    Publication statusPublished - 1 Apr 2011

    Keywords

    • C-C recoupling
    • DARR
    • DONER
    • Floquet theory
    • MAS
    • Perdeuterated proteins
    • RAD
    • Solid state NMR

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