Dynamic nuclear polarization of quadrupolar nuclei using cross polarization from protons: surface-enhanced aluminium-27 NMR

Veronika Vitzthum; Pascal Miéville; Diego Carnevale; Marc A. Caporini; David Gajan; Christophe Copéret; Moreno Lelli; Alexandre Zagdoun; Aaron J. Rossini; Anne Lesage; Lyndon Emsley; Geoffrey Bodenhausen

doi:10.1039/C2CC15905H

Dynamic nuclear polarization of quadrupolar nuclei using cross polarization from protons: surface-enhanced aluminium-27 NMR†

Veronika Vitzthum,^a Pascal Miéville,*^a Diego Carnevale,^a Marc A. Caporini,^a David Gajan,^b Christophe Copéret,^b Moreno Lelli,^c Alexandre Zagdoun,^c Aaron J. Rossini,^c Anne Lesage,^c Lyndon Emsley^c and Geoffrey Bodenhausen^adef

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^a Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
E-mail: pascal.mieville@epfl.ch

^b Department of Chemistry, ETH Zürich, CH-8093 Z, Switzerland

^c Centre de RMN à Tres Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100 Villeurbanne, France

^d Département de Chimie, Ecole Normale Supérieure, 24 Rue Lhomond, Paris Cedex 05, France

^e Université Pierre-et-Marie Curie, Paris, France

^f CNRS, UMR 7203, Paris, France

Abstract

The surface of γ-alumina nanoparticles can be characterized by dynamic nuclear polarization (DNP) surface-enhanced NMR of ²⁷Al. DNP is combined with cross-polarization and MQ-MAS to determine local symmetries of ²⁷Al sites at the surface.

Chemical Communications

Dynamic nuclear polarization of quadrupolar nuclei using cross polarization from protons: surface-enhanced aluminium-27 NMR†

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Dynamic nuclear polarization of quadrupolar nuclei using cross polarization from protons: surface-enhanced aluminium-27 NMR

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