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Solvent suppression in solid‐state DNP NMR using Electronic Mixing‐Mediated Annihilation (EMMA)
Author(s) -
Ziarelli Fabio,
Thureau Pierre,
Viel Stéphane,
Mollica Giulia
Publication year - 2020
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.5001
Subject(s) - chemistry , annihilation , polarization (electrochemistry) , spectral line , mixing (physics) , nuclear magnetic resonance , relaxation (psychology) , solid state nuclear magnetic resonance , solvent , nuclear magnetic resonance spectroscopy , nmr spectra database , analytical chemistry (journal) , nuclear physics , chromatography , organic chemistry , physics , psychology , social psychology , quantum mechanics , astronomy
We show here that the Electronic Mixing‐Mediated Annihilation (EMMA) method, previously reported for the suppression of background signals in solid‐state nuclear magnetic resonance spectra, can be successfully applied to remove the solvent signals observed in the case of nuclear magnetic resonance spectra obtained with dynamic nuclear polarization. The methodology presented here is applied to two standard sample preparation methods for dynamic nuclear polarization, namely, glass forming and incipient wetness impregnation. It is demonstrated that the Electronic Mixing‐Mediated Annihilation method is complementary to the different methods for solvent suppression based on relaxation filters and that it can be used to preserve the quantitative information that might be present in the pristine spectra.