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Self-assembled trityl radical capsules implications for dynamic nuclear polarization

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A new class of guest-induced, bi-radical self-assembled organic capsules is reported. They are formed by the inclusion of a tetramethylammonium (TMA) cation between two monomers of the stable trityl radical OX63. OX63 is extensively used in dissolution dynamic nuclear polarization (DNP) where it leads to NMR sensitivity enhancements of several orders of magnitude. The supramolecular properties of OX63 have a strong impact on its DNP properties. An especially relevant case is the polarization of choline-containing metabolites, where complex formation between choline and OX63 results in faster relaxation.

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Physical Chemistry Chemical Physics, 2015, vol. 17, p. 5785-5794

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Articles publicats en revistes (Química Inorgànica i Orgànica)

# metadata.dc.title[].value
Self-assembled trityl radical capsules implications for dynamic nuclear polarization