Surface Enhanced NMR Spectroscopy by Dynamic Nuclear Polarization

A nice write-up in C&E News about DNP SSNMR of molecules bound to silica surfaces.

http://pubs.acs.org/cen/news/88/i38/8838notw6.html

The corresponding JACS communication can be found at:

http://pubs.acs.org/doi/abs/10.1021%2Fja104771z

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
DOI: 10.1021/ja104771z
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