Double-resonance decoupling for resolution enhancement of P-31 solid-state MAS and Al-27 -> P-31 MQHETCOR NMR - Université de Lille Accéder directement au contenu
Article Dans Une Revue Solid State Nuclear Magnetic Resonance Année : 2002

Double-resonance decoupling for resolution enhancement of P-31 solid-state MAS and Al-27 -> P-31 MQHETCOR NMR

Résumé

27Al decoupling has been used to remove residual J-coupling interactions between31 P and 27Al in microporous aluminophosphates AlPO4-14 and AlPO4-40. In combination with 1H high-power decoupling, 27Al adapted decoupling yields 31P spectra with optimal sensitivity and resolution. The importance of double-resonance decoupling is further demonstrated by incorporating this technique in the MQHETCOR sequence. Unambiguous assignment of all the AlPO4-14 nuclear magnetic resonances is achieved by combining multiple-quantum evolution in the 27Al dimension and double-resonance decoupling in the 31P acquisition domain.

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Chimie

Dates et versions

hal-04559421 , version 1 (25-04-2024)

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Laurent Delevoye, Christian Fernandez, Claudia M. Morais, Jean-Paul Amoureux, Valérie Montouillout, et al.. Double-resonance decoupling for resolution enhancement of P-31 solid-state MAS and Al-27 -> P-31 MQHETCOR NMR. Solid State Nuclear Magnetic Resonance, 2002, Solid State Nuclear Magnetic Resonance, 22, pp.501-512. ⟨10.1006/snmr.2002.0080⟩. ⟨hal-04559421⟩
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