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2010

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/47985

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.

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http://dx.doi.org/10.1039/C003291N

Subject

Ressonància magnètica nuclear, Camps magnètics, Polarització (Física nuclear), Nanomedicina, Matèria condensada, Clor, Solubilitat, Aigua, Radicals (Química)

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Nuclear magnetic resonance, Magnetic fields, Polarization (Nuclear physics), Nanomedicine, Condensed matter, Chlorine, Solubility, Water, Radicals (Chemistry)

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Articles publicats en revistes (Química Inorgànica i Orgànica)

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PANIAGUA, Juan Carlos, et al. Polychlorinated trityl radicals for dynamic nuclear polarization: the role of chlorine nuclei. Physical Chemistry Chemical Physics. 2010. Vol. 12, num. 5824-5829. ISSN 1463-9076. [consulted: 10 of October of 2026]. Available at: https://hdl.handle.net/2445/47985

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