NMR Heteronuclear Correlation between Quadrupolar Nuclei in Solids. - Archive ouverte HAL
Article Dans Une Revue Journal of the American Chemical Society Année : 2005

NMR Heteronuclear Correlation between Quadrupolar Nuclei in Solids.

Résumé

We show for the first time that it is possible to acquire high-resolution heteronuclear NMR correlation experiments in solid state between second-order-broadened half integer quadrupolar nuclei (i.e., 27Al and 17O) using the scalar J-coupling. The sensitivity of the experiment is dramatically improved at high fields (gain proportional to the fourth power of the principal field) with a combination of signal enhancement techniques. This turns a challenging experiment into a real tool. We apply this experiment to characterize a calcium aluminate glass in which we prove the presence of tricluster 3 oxygen sites and describe the signature of their directly bonded aluminum sites. Applications involve a large range of possible pairs of quadrupolar nuclei in different materials, such as glasses, porous or mesoporous framework materials, zeolites, hybrid organic-inorganic, and bioinvolved materials.

Domaines

Matériaux
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Dates et versions

hal-00012209 , version 1 (18-10-2005)

Identifiants

Citer

D. Iuga, C. Morais, Z. Gan, D.R. Neuville, L. Cormier, et al.. NMR Heteronuclear Correlation between Quadrupolar Nuclei in Solids.. Journal of the American Chemical Society, 2005, 127, pp.11540-11541. ⟨10.1021/ja052452n⟩. ⟨hal-00012209⟩
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