Improved Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy through Controlled Incorporation of Deuterated Functional Groups

Zagdoun, AlexandreRossini, Aaron J.Conley, Matthew P.Gruening, Wolfram R.Schwarzwaelder, MartinLelli, MorenoFranks, W. TrentOschkinat, HartmutCoperet, ChristopheEmsley, LyndonLesage, Anne2015-01-082015-01-082015-01-08201310.1002/anie.201208699https://infoscience.epfl.ch/handle/20.500.14299/109980WOS:000313719300026In a spin: The use of deuterated surface passivation agents is shown to restore dynamic nuclear polarization (DNP) surface-enhanced NMR signals that are reduced in substrates containing methyl groups, while still protecting sensitive sites on the surface (see picture). Furthermore, apolar groups such as [D9]-trimethylsiloxy (TMS) repel radicals (yellow) away from the surface, thus diminishing detrimental paramagnetic effects induced by radical proximity. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.dynamic nuclear polarizationmaterials scienceNMR spectroscopyImproved Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy through Controlled Incorporation of Deuterated Functional Groupstext::journal::journal article::research article