Ultrafast measurements of the dynamics of solvation in polar and non-dipolar solvents

J. Gardecki, M. L. Horng, A. Papazyan, Mark Maroncelli

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The dynamics of solvation of the probe solute coumarin 153 has been measured with ~100 fs time resolution using the fluorescence upconversion technique. A wide variety of solvents, including polar aprotic solvents, hydrogen bonding solvents, and non-dipolar solvents have been examined. For all solvents of even moderate polarity (49-01), the solvation dynamics observed follows the predictions simple models based on the solvent's bulk dielectric response. For a number of “non-dipolar” solvents such as dioxane and benzene, for which (49-02), we observe surprisingly large time-dependent shifts, which seem to reflect the solute interacting with the large quadrupole (and higher multipole) moments of the solvent molecules. These dynamics represent a solvation distinct from the dipolar solvation dynamics previously studied and they cannot be modeled in terms of any currently available theory.

Original languageEnglish (US)
Pages (from-to)49-57
Number of pages9
JournalStudies in Physical and Theoretical Chemistry
Volume83
Issue numberC
DOIs
StatePublished - Jan 1 1995

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Solvation
solvation
solutes
Benzene
multipoles
polarity
Hydrogen bonds
quadrupoles
Fluorescence
benzene
moments
fluorescence
Molecules
probes
shift
hydrogen
predictions

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry

Cite this

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abstract = "The dynamics of solvation of the probe solute coumarin 153 has been measured with ~100 fs time resolution using the fluorescence upconversion technique. A wide variety of solvents, including polar aprotic solvents, hydrogen bonding solvents, and non-dipolar solvents have been examined. For all solvents of even moderate polarity (49-01), the solvation dynamics observed follows the predictions simple models based on the solvent's bulk dielectric response. For a number of “non-dipolar” solvents such as dioxane and benzene, for which (49-02), we observe surprisingly large time-dependent shifts, which seem to reflect the solute interacting with the large quadrupole (and higher multipole) moments of the solvent molecules. These dynamics represent a solvation distinct from the dipolar solvation dynamics previously studied and they cannot be modeled in terms of any currently available theory.",
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Ultrafast measurements of the dynamics of solvation in polar and non-dipolar solvents. / Gardecki, J.; Horng, M. L.; Papazyan, A.; Maroncelli, Mark.

In: Studies in Physical and Theoretical Chemistry, Vol. 83, No. C, 01.01.1995, p. 49-57.

Research output: Contribution to journalArticle

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