Fast responses from "slowly relaxing" liquids: A comparative study of the femtosecond dynamics of triacetin, ethylene glycol, and water

Joon Chang Yong, Ed Castner

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Abstract

We have measured the ultrafast solvent relaxation of liquid ethylene glycol, triacetin, and water by means of femtosecond polarization spectroscopy, using optical-heterodyne-detected Raman-induced Kerr-effect spectroscopy. In the viscous liquids triacetin and ethylene glycol, femtosecond relaxation processes were resolved. Not surprisingly, the femtosecond nonlinear optical response of ethylene glycol is quite similar to that of water. Using the theory of Maroncelli, Kumar, and Papazyan, we transform the pure-nuclear solvent response into a dipolar-solvation correlation function for comparison with ultrafast electron-transfer reaction rates.

Original languageEnglish
Pages (from-to)7289-7299
Number of pages11
JournalJournal of Chemical Physics
Volume99
Issue number10
Publication statusPublished - 1993

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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