Robust and efficient spin-locked symmetry-based double-quantum homonuclear dipolar recoupling for probing H-1-H-1 proximity in the solid-state - Université de Lille Accéder directement au contenu
Article Dans Une Revue Journal of Magnetic Resonance Année : 2009

Robust and efficient spin-locked symmetry-based double-quantum homonuclear dipolar recoupling for probing H-1-H-1 proximity in the solid-state

Résumé

We report a novel symmetry-based method, using inversion elements bracketed by spin locks, for exciting double-quantum (DQ) coherences between spin-1/2 nuclei, such as protons. Compared to previous DQ-recoupling techniques, this new pulse sequence requires moderate rf field, even at ultra-fast MAS speeds. Furthermore, it is easy to implement and it displays higher robustness to both chemical shift anisotropy and to spreads in resonance frequencies. These advances greatly facilitate the observation of 1H–1H proximities at high fields and high MAS frequencies.

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Chimie
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Dates et versions

hal-04560244 , version 1 (26-04-2024)

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B. Hu, Q. Wang, Olivier Lafon, Julien Trebosc, F. Deng, et al.. Robust and efficient spin-locked symmetry-based double-quantum homonuclear dipolar recoupling for probing H-1-H-1 proximity in the solid-state. Journal of Magnetic Resonance, 2009, Journal of Magnetic Resonance, 198, pp.41-48. ⟨10.1016/j.jmr.2009.01.002⟩. ⟨hal-04560244⟩
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