Surface-selective direct O DNP has been demonstrated for the first time on CeO nanoparticles, for which the first three layers can be distinguished with high selectivity. Polarisation build-up curves show that the polarisation of the (sub-)surface sites builds up faster than the bulk, accounting for the remarkable surface selectivity.
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http://dx.doi.org/10.1039/c6cc10145c | DOI Listing |
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