Numéro
J. Phys. IV France
Volume 01, Numéro C5, Décembre 1991
COLLOQUE WEYL VII
International Conference on METALS IN SOLUTION
Page(s) C5-161 - C5-166
DOI http://dx.doi.org/10.1051/jp4:1991520
COLLOQUE WEYL VII
International Conference on METALS IN SOLUTION

J. Phys. IV France 01 (1991) C5-161-C5-166

DOI: 10.1051/jp4:1991520

FEMTOSECOND INFRARED AND VISIBLE SPECTROSCOPY OF EXCESS ELECTRON IN NEAT DIMETHYLSULFIDE

Y. GAUDUEL1, S. POMMERET1, A. ANTONETTI1, J. BELLONI2 and J.L. MARIGNIER2

1  Laboratoire d'Optique Appliquée, Ecole Polytechnique - ENS Techniques Avancées, CNRS URA 1406 - INSERM U275, F-91120 Palaiseau, France
2  Laboratoire de Physico-Chimie des Rayonnements associé au CNRS (URA 75), Université Orsay Paris-Sud, Bâtiment 350, F-91405 Orsay cedex, France


Abstract
Preliminary femtosecond spectroscopic studies of primary events occurring in the neat dimethylsulfide at 294 K following initial energy deposition are presented. A transient induced absorbance in the infrared (1330 nm) appears in 120 fs after the ultraviolet photoionization of dimethylsulfide. Considering scavenging experiments, we assign this signal to the solvated electron [MATH]. In the visible spectral region ([MATH] = 420 nm), a short lived species, formed in less than 300 fs has been observed. A tentative assignment of this transient component is directed toward the existence of a solvated or complexed form of the primary anion resulting from the direct electron attachment to solvent molecule.



© EDP Sciences 1991