Oxygen-17 dynamic nuclear polarisation enhanced solid-state NMR spectroscopy at 18.8 T.

Nick J Brownbill (1) , David Gajan (2) , Anne Lesage (2) , Lyndon Emsley (3) , Frédéric Blanc (4, 1)

1 Dept Chem
2 Solid-State NMR Methods for Materials - Méthodes de RMN à l'état solide pour les matériaux
3 EPFL - Ecole Polytechnique Fédérale de Lausanne
4 Department of Chemistry and Stephenson Institute for Renewable Energy

We report (17)O dynamic nuclear polarisation (DNP) enhanced solid-state NMR experiments at 18.8 T. Several formulations were investigated on the Mg(OH)2 compound. A signal enhancement factor of 17 could be obtained when the solid particles were incorporated into a glassy o-terphenyl matrix doped with BDPA using the Overhauser polarisation transfer scheme whilst the cross effect mechanism enabled by TEKPol yielded a slightly lower enhancement but more time efficient data acquisition.

Domaines: Chimie

Nick J Brownbill, David Gajan, Anne Lesage, Lyndon Emsley, Frédéric Blanc. Oxygen-17 dynamic nuclear polarisation enhanced solid-state NMR spectroscopy at 18.8 T.. Chemical Communications, 2017, 53 (17), pp.2563-2566. ⟨10.1039/c6cc09743j⟩. ⟨hal-01546471⟩