Abstract
The absorption and fluorescence of three isomeric distyrylbenzenes are investigated as function of temperature. From the fluorescence decay times and fluorescence quantum yields two classes of oligostyrylarenes can be distinguished. A decisive criterion for this classification is, whether the first excited singlet state S1 belongs to an allowed or forbidden transition S0→S1.
Keywords: o-; m-; p-Distyrylbenzenfes; Fluorescence Lifetimes; Fluorescence Quantum Yields; Photoreactivity
Received: 1988-2-25
Published Online: 2014-6-2
Published in Print: 1988-6-1
© 1946 – 2014: Verlag der Zeitschrift für Naturforschung
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