Picosecond Pulse Radiolysis of Propylene Carbonate as a Solute in Water and as a Solvent

Jean-Louis Marignier 1 Faycal Torche 1 Sophie Le Caer 2 Mehran Mostafavi 1 Jacqueline Belloni 1
1 LCPO - Laboratoire de Chimie Physique D'Orsay
2 LIONS - Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : The ester propylene carbonate (PC) is a solvent with a high static dielectric constant where the charges generated by ionizing radiation are expected to be long-lived at room temperature. Time-resolved optical absorption spectroscopy after picosecond electron pulses reveals the formation of a UV band, within less than two nanoseconds, that is assigned to the radical anion PC − • , arising from a fast attachment reaction of electrons onto PC. Assignment and reactivity of PC − • in neat solvent and solutions are discussed in relation with data obtained in solutions of PC in water under reducing or oxidizing conditions and in solutions in PC of aromatic scavengers with various reduction potentials. The fate of the electrons and the ionization yield in PC are compared with those of other solvents.
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https://hal-cea.archives-ouvertes.fr/cea-01294342
Contributor : Serge Palacin <>
Submitted on : Tuesday, March 29, 2016 - 10:47:45 AM
Last modification on : Thursday, February 7, 2019 - 4:04:03 PM

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Jean-Louis Marignier, Faycal Torche, Sophie Le Caer, Mehran Mostafavi, Jacqueline Belloni. Picosecond Pulse Radiolysis of Propylene Carbonate as a Solute in Water and as a Solvent. Journal of Physical Chemistry B, American Chemical Society, 2016, 120, pp.2388-2396. ⟨10.1021/acs.jpcb.5b11793⟩. ⟨cea-01294342⟩

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