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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 119 (1986), S. 1716-1724 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on the Fluorescence of Styryl-substituted BenzenesFluorescence decay measurements of the stilbene-like compounds 1 - 4 demonstrate that the average lifetimes of these molecules in the electronically excited singlet state are about 102 times higher than for trans-stilbene itself. According to UV absorption and excitation spectra this is due to a new S1 state, which corresponds to a forbidden S0 → S1 transition on the long-wavelength edge of the intense absorption.
    Notes: Die Fluoreszenz-Abklingzeiten der stilbenartigen Verbindungen 1 - 4 zeigen, daß die mittleren Lebensdauern dieser Moleküle im elektronisch angeregten Singulettzustand um rund zwei Zehnerpotenzen höher sind als bei trans-Stilben selbst. Anhand von UV-Absorptions-und Anregungsspektren wird das auf einen neu gefundenen S1-Zustand zurückgeführt, der einem verbotenen Übergang S0 → S1 auf der langwelligen Seite der intensiven Absorption entspricht.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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