title: Dynamic nuclear polarization enhanced natural abundance 17O spectroscopy.
abstract: We show that natural abundance oxygen-17 NMR of solids could be obtained in minutes at a moderate magnetic field strength by using dynamic nuclear polarization (DNP). Electron spin polarization could be transferred either directly to (17)O spins or indirectly via (1)H spins in inorganic oxides and hydroxides using an oxygen-free solution containing a biradical polarization agent (bTbK). The results open up a powerful method for rapidly acquiring high signal-to-noise ratio solid-state NMR spectra of (17)O nuclear spins and to probe sites on or near the surface, without the need for isotope labeling.
authors: Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom. frederic.blanc@liverpool.ac.uk
authors: Frédéric
authors: F
authors: Blanc
authors: Luke
authors: L
authors: Sperrin
authors: David A
authors: DA
authors: Jefferson
authors: Shane
authors: S
authors: Pawsey
authors: Melanie
authors: M
authors: Rosay
authors: Clare P
authors: CP
authors: Grey
mesh_terms: D010103:Oxygen Isotopes / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D010103:Oxygen Isotopes