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  • Title: Spin-locking and cross-polarization under magic-angle spinning of uniformly labeled solids.
    Author: Hung I, Gan Z.
    Journal: J Magn Reson; 2015 Jul; 256():23-29. PubMed ID: 25965280.
    Abstract:
    Spin-locking and cross-polarization under magic-angle spinning are investigated for uniformly (13)C and (15)N labeled solids. In particular, the interferences from chemical shift anisotropy, and (1)H heteronuclear and (13)C homonuclear dipolar couplings are identified. The physical origin of these interferences provides guidelines for selecting the best (13)C and (15)N polarization transfer rf fields. Optimal settings for both the zero- and double-quantum cross-polarization transfer mechanisms are recommended.
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