Frozen Acrylamide Gels as Dynamic Nuclear Polarization Matrices.

Jasmine Viger-Gravel, Pierrick Berruyer, David Gajan, Jean-Marie Basset, Anne Lesage, Paul Tordo, Olivier Ouari, Lyndon Emsley

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We show that aqueous acrylamide gels can be used to provide dynamic nuclear polarization (DNP) NMR signal enhancements of around 200 at 9.4 T and 100 K. The enhancements are shown to increase with cross linker concentration and low concentrations of the AMUPol biradical. We show that this DNP matrix can be used in situations where conventional incipient wetness methods fail, such as to obtain DNP surface enhanced NMR spectra from inorganic nanoparticles. In particular, we obtain 113Cd spectra from CdTe-COOH NPs in minutes. The spectra clearly indicate a highly-disordered cadmium rich surface.
Original languageEnglish (US)
Pages (from-to)8726-8730
Number of pages5
JournalAngewandte Chemie International Edition
Volume56
Issue number30
DOIs
StatePublished - Jun 19 2017

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