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Title

Investigation of the Solvation Dynamics of an Organic Dye in Polar Solvents Using the Femtosecond Transient Grating Technique

Authors
Gumy, Jean-Claude
Published in Journal of Physical Chemistry. A. 1999, vol. 103, no. 50, p. 10737-10743
Abstract The solvation dynamics of an organic dye, IR140, in methanol, ethanol, and in a series of six alkanenitriles has been investigated using the transient grating technique. In all solvents, the dynamics exhibit ultrafast, almost solvent-independent, components ascribed to inertial solvation, and a slower viscosity-dependent component, due to diffusive solvation. The relative amplitudes of these components depend on both the solvent and on the wavelength at which the experiment is performed. The contribution of inertial motion increases with decreasing size of the solvent molecules and with decreasing wavelength. It appears that diffusive motion is associated with a loose solvent shell, while inertial motion dominates when the solvation layer is dense.
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Research group Groupe Vauthey
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GUMY, Jean-Claude, NICOLET, Olivier, VAUTHEY, Eric. Investigation of the Solvation Dynamics of an Organic Dye in Polar Solvents Using the Femtosecond Transient Grating Technique. In: Journal of Physical Chemistry. A, 1999, vol. 103, n° 50, p. 10737-10743. https://archive-ouverte.unige.ch/unige:2942

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Deposited on : 2009-09-21

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