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The inhomogeneous broadening of the electronic spectra of dyes in glycerol solution. A time-resolved fluorescence study

✍ Scribed by Michael J.E. Morgenthaler; Stephen R. Meech; Keitaro Yoshihara

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 491 KB
Volume: 197
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)85812-o

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✦ Synopsis

Inhomogeneous broadening of the electronic transitions of dyes in glycerol solutions have been observed by measuring the energy-resolved fluorescence decays as a function of excitation wavelength. The inhomogeneous broadening is shown to arise from a range of solvent-solute orientations, rather than solute conformational distributions. The time-resolved fluorescence data are readily interpreted in terms of a conventional model of inhomogeneous broadening with the inclusion of excited state solventsolute reorientation. Implications for studies of the dynamic solvation shift are briefly discussed.

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