title: Picosecond Pulse Radiolysis of Propylene Carbonate as a Solute in Water and as a Solvent.
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.
authors: Laboratoire de Chimie-Physique/ELYSE, UMR 8000 CNRS/UPS, Université Paris Sud, Université Paris-Saclay , Bât. 349, F-91405 Orsay Cedex, France.
authors: Jean-Louis
authors: JL
authors: Marignier
authors: Laboratoire de Chimie-Physique/ELYSE, UMR 8000 CNRS/UPS, Université Paris Sud, Université Paris-Saclay , Bât. 349, F-91405 Orsay Cedex, France.
authors: Fayçal
authors: F
authors: Torche
authors: LIONS, NIMBE, CEA, CNRS, Université Paris Saclay, CEA Saclay , F-91191 Gif-sur-Yvette Cedex, France.
authors: Sophie
authors: S
authors: Le Caër
authors: Laboratoire de Chimie-Physique/ELYSE, UMR 8000 CNRS/UPS, Université Paris Sud, Université Paris-Saclay , Bât. 349, F-91405 Orsay Cedex, France.
authors: Mehran
authors: M
authors: Mostafavi
authors: Laboratoire de Chimie-Physique/ELYSE, UMR 8000 CNRS/UPS, Université Paris Sud, Université Paris-Saclay , Bât. 349, F-91405 Orsay Cedex, France.
authors: Jacqueline
authors: J
authors: Belloni