Dynamic Nuclear Polarization Enhanced Natural Abundance 17O Spectroscopy
| Autor: | Luke Sperrin, Melanie Rosay, Clare P. Grey, Frédéric Blanc, Shane Pawsey, David A. Jefferson |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Spins
Isotope Chemistry Spectrum Analysis Analytical chemistry General Chemistry Oxygen Isotopes Carbon-13 NMR Polarization (waves) Biochemistry Catalysis Magnetic field NMR spectra database Colloid and Surface Chemistry Condensed Matter::Strongly Correlated Electrons Physics::Chemical Physics Insensitive nuclei enhanced by polarization transfer Spectroscopy |
| Zdroj: | Journal of the American Chemical Society. 135:2975-2978 |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/ja4004377 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|