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Article Dans Une Revue Angewandte Chemie International Edition Année : 2011

Beyond the silica surface by direct silicon-29 dynamic nuclear polarization

Résumé

Buried truth: High-field magic angle spinning dynamic nuclear polarization (MAS DNP) enhances the sensitivity of solid-state NMR spectroscopy, but only for protonated surfaces. Direct 29Si DNP using the biradical TOTAPOL (see picture) circumvents this limitation by producing a 30-fold enhancement of subsurface 29Si NMR signals in mesoporous silica, a material with applications in photonics, nanotechnology and catalysis.

Dates et versions

hal-00624571 , version 1 (19-09-2011)

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O. Lafon, M. Rosay, F. Aussenac, X. Lu, J. Trebosc, et al.. Beyond the silica surface by direct silicon-29 dynamic nuclear polarization. Angewandte Chemie International Edition, 2011, 50, pp.8367 - 8370. ⟨10.1002/anie.201101841⟩. ⟨hal-00624571⟩
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