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Solvent-assisted intramolecular vibrational energy redistribution of S1 perylene in ketone solvents

Paper ID Volume ID Publish Year Pages File Format Full-Text
29351 44158 2006 7 PDF Available
Title
Solvent-assisted intramolecular vibrational energy redistribution of S1 perylene in ketone solvents
Abstract

We investigated vibrational energy relaxations of S1 perylene at an excess energy of ca. 2800 cm−1 in several ketone solvents by femtosecond time-resolved fluorescence measurements. Temporal evolution of fluorescence emissions occurs on the following distinct timescales: 70–330 fs, 0.6–1.1 ps and 1.8–4.9 ps. The latter two was assigned to the intramolecular vibrational redistribution (IVR), and to the solvent-assisted IVR (SA-IVR), respectively. In SA-IVR, intramolecular vibrational couplings are affected by elastic or quasi–elastic interactions between solute and solvents. Solvent dependence of the SA-IVR rates can be explained qualitatively by the tier V–V coupling mechanism.

Keywords
Vibrational relaxation; Intramolecular vibrational energy redistribution; Intermolecular vibrational energy transfer; Fluoresence up-conversion method; Solute–solvent interaction
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Solvent-assisted intramolecular vibrational energy redistribution of S1 perylene in ketone solvents
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 178, Issues 2–3, 20 March 2006, Pages 201–207
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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