✦ LIBER ✦

Influence of non-Debye relaxation and of molecular shape on the time dependence of the stokes shift in polar media

✍ Scribed by Edward W. Castner Jr.; Graham R. Fleming; Biman Bagchi

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 599 KB
Volume: 143
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)87379-2

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✦ Synopsis

We present theoretical analyses of two different aspects ofthe time dependence of the fluorescence Stokes shift in polar liquids. We show that a small deviation from the Debye form for the dielectric relaxation of the solvent can strongly influence the time evolution of the Stokes shift. Using the Davidson-Cole form for dielectric response we find a stretched exponential time dependence as observed in recent experiments. We also show that the shape of the fluorescing molecule can influence the dynamics of solvation.

' John Simon Guggenheim Fellow.

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