Rôle de la charge de la sonde moléculaire sur la solvatation. Aspects statiques et dynamiques (original) (raw)

Journal de Chimie Physique

Abstract

ABSTRACT The solvent reorganisation around two molecular probes, LDS 751 and DCM, has been investigated in methanol solution. The decrease of the mean frequency of the DCM fluorescence spectrum as a function of time shows a biexponential kinetics. The fast decay has a (175±100) fs time constant and the slow component (3,2±0,1) ps is identical to the value found in the case of LDS 751. These findings are discussed with reference to the charge distribution in the electronic states involved and to literature results concerning another solvent probe, the solvated electron generated by pulse radiolysis or by multiphotonic ionisation of methanol.

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