Photophysics of derivatives of trans-stilbenes in poly(vinyl alcohol) films

Ignacy Gryczynski, Alfons Kawski, Zygmunt Gryczynski, Dieter Gloyna

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Absorption and fluorescence spectra of eight trans-stilbene derivatives have been measured in poly(vinyl alcohol) (PVA) films. Fluorescence quantum yields, φF, and mean fluorescence lifetimes, τF, have also been determined for these substances. Fluorescence quantum yields investigated in PVA films were found to be markedly higher than those measured in liquid solutions, this effect being even more pronounced with the mean fluorescence lifetimes. Radiative and radiationless deactivation constants kF and kd, respectively, were determined based on the measurements of φF and τF. The effect of donor-acceptor properties of substitutes δp upon the deactivation constants was examined. The energies of the 0-0 transitions between electronic states S0 and S1 were also affected by the donor-acceptor properties of the substituent, remaining in correlation with the Hammett constants δp.

Original languageEnglish
Pages (from-to)1879-1884
Number of pages6
JournalJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
Volume82
Issue number11
DOIs
StatePublished - 1 Dec 1986

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