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Title: Self-assembled trityl radical capsules implications for dynamic nuclear polarization
Author: Marin-Montesinos, I.
Paniagua, Juan Carlos
Vilaseca Casas, Marta
Urtizberea, A.
Luis, F.
Feliz Rodenas, Miguel
Lin, F.
Van Doorslaer, S.
Pons Vallès, Miquel
Keywords: Química física
Polarització (Física nuclear)
Ressonància paramagnètica electrònica
Physical and theoretical chemistry
Polarization (Nuclear physics)
Electron paramagnetic resonance
Issue Date: 20-Jan-2015
Publisher: Royal Society of Chemistry
Abstract: 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.
Note: Versió postprint del document publicat a:
It is part of: Physical Chemistry Chemical Physics, 2015, vol. 17, p. 5785-5794
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ISSN: 1463-9076
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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