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Issue 22, 2010
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Polychlorinated trityl radicals for dynamic nuclear polarization: the role of chlorine nuclei

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Abstract

Polychlorinated trityl radicals bearing carboxylate substituents are water soluble persistent radicals that can be used for dynamic nuclear polarization. In contrast to other trityl radicals, the polarization mechanism differs from the classical solid effect. DFT calculations performed to rationalize this behaviour support the hypothesis that polarization is transferred from the unpaired electron to chlorine nuclei and from these to carbon by spin diffusion. The marked differences observed between neutral and anionic forms of the radical will be discussed.

Graphical abstract: Polychlorinated trityl radicals for dynamic nuclear polarization: the role of chlorine nuclei

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Publication details

The article was received on 16 Feb 2010, accepted on 20 Apr 2010 and first published on 10 May 2010


Article type: Paper
DOI: 10.1039/C003291N
Citation: Phys. Chem. Chem. Phys., 2010,12, 5824-5829
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    Polychlorinated trityl radicals for dynamic nuclear polarization: the role of chlorine nuclei

    J. C. Paniagua, V. Mugnaini, C. Gabellieri, M. Feliz, N. Roques, J. Veciana and M. Pons, Phys. Chem. Chem. Phys., 2010, 12, 5824
    DOI: 10.1039/C003291N

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