Dynamics in ionic solutions - Revisited

R. Argaman, D. Huppert*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We used steady-state absorption, emission, and time-resolved fluorescence measurements of coumarin 153 in butyl acetate - LiClO4 solutions to study the static and dynamic aspects of ion-probe interactions. We analyzed the low concentration data in terms of two distinct solvate configurations. The first distinct solvate was a probe molecule surround by n solvent molecules in the first solvation shell; in the second distinct solvate, one of the surrounding solvent molecules was replaced by a Li+ cation. We used a diffusive model to describe quantitatively the dynamics of the ion/solvent exchange reaction. At low concentration (≤0.5 M), our model accounts for steady-state spectroscopic data and the viscosity dependence of the dynamics.

Original languageEnglish
Pages (from-to)1338-1348
Number of pages11
JournalJournal of Physical Chemistry B
Issue number6
StatePublished - 17 Feb 2000


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