Chemiluminescence from the action of singlet oxygen (1Δg) on chlorophyll a and some other luminescing substances

  • In systems containing singlet-oxygen and aromatic fluorescers energy transfer from singletoxygen dimers to the dye should be observable by emission of the fluorescer. In order to prove this hypothesis, externally generated singlet-oxygen (1Δg) was bubbled through the solutions of dyes (chlorophyll a, eosin y, rhodamine b, luminol, rubrene and acridine orange) in organic solvents. Luminescence could be observed and its spectral distribution analyzed by sharp cut-off filters and interference filters (rubrene) . Spectra, rates of oxidation, addition of quenchers and the long lasting time dependence of the reported reactions lead to the conclusion that the observed afterglow is due to chemical oxidation mechanisms producing a chemiluminescence. Therefore an excitation of the substances investigated in these experiments by simple physical energy transfer seems not to be predominant.

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Author:Joachim StauffGND, Hartmut FuhrGND
Parent Title (German):Zeitschrift für Naturforschung, B
Publisher:Verlag der Zeitschrift für Naturforschung
Place of publication:Tübingen
Document Type:Article
Date of Publication (online):2014/06/02
Year of first Publication:1971
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2023/09/25
Page Number:4
First Page:260
Last Page:263
Institutes:Biochemie, Chemie und Pharmazie / Biochemie und Chemie
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung 3.0