A nice write-up in C&E News about DNP SSNMR of molecules bound to silica surfaces.
The corresponding JACS communication can be found at:
Surface Enhanced NMR Spectroscopy by Dynamic Nuclear Polarization
Anne Lesage†, Moreno Lelli†, David Gajan‡, Marc A. Caporini§, Veronika Vitzthum§, Pascal Miville§, Johan Alauzun, Arthur Roussey‡, Chlo Thieuleux‡, Ahmad Medhi, Geoffrey Bodenhausen§, Christophe Copret‡, and Lyndon Emsley*†
J. Am. Chem. Soc., Article ASAP
Publication Date (Web): September 10, 2010
Copyright © 2010 American Chemical Society
Abstract: It is shown that surface NMR spectra can be greatly enhanced using dynamic nuclear polarization. Polarization is transferred from the protons of the solvent to the rare nuclei (here carbon-13 at natural isotopic abundance) at the surface, yielding at least a 50-fold signal enhancement for surface species covalently incorporated into a silica framework