Refocused linewidths less than 10 Hz in 1 H solid-state NMR

Refocused linewidths less than 10 Hz in 1 H solid-state NMR

Coherence lifetimes in homonuclear dipolar decoupled H solid-state NMR experiments are usually on the order of a few ms. We discover an oscillation that limits the lifetime of the coherences by recording spin-echo dephasing curves. We find that this oscillation can be removed by the application of a...

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Veröffentlicht in:Journal of magnetic resonance (1997) 2018-08, Vol.293, p.41-46
Hauptverfasser: Paruzzo, Federico M, Stevanato, Gabriele, Halse, Meghan E, Schlagnitweit, Judith, Mammoli, Daniele, Lesage, Anne, Emsley, Lyndon
Format: Artikel
Sprache:eng
Schlagworte:
Analytical chemistry
Chemical Sciences
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Zusammenfassung:Coherence lifetimes in homonuclear dipolar decoupled H solid-state NMR experiments are usually on the order of a few ms. We discover an oscillation that limits the lifetime of the coherences by recording spin-echo dephasing curves. We find that this oscillation can be removed by the application of a double spin-echo experiment, leading to coherence lifetimes of more than 45 ms in adamantane and more that 22 ms in β-AspAla, corresponding to refocused linewidths of less than 7 and 14 Hz respectively.
ISSN:1090-7807
1096-0856
DOI:10.1016/j.jmr.2018.06.001