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ENERGY TRANSFER FROM CHEMIEXCITED ACETONE TO SUBSTANCES THAT DISPLAY ANOMALOUS FLUORESCENCE

Authors:	Waldemar Adam Wilhelm J Baader † Luiz H Catalani Giuseppe Cilento Lyda Rychlá

Institution:	Institute of Organic Chemistry, University of Würzburg, D-8700 Würzburg, W. Germany;Department of Biochemistry, Instituto de Química, Universidade de São Paulo, C.P. 20.780, São Paulo, Brazil;†Postdoctoral Fellow jointly funded by the Stiftung Volkswagenwerk and the 400-Jahre-Jubiläumsstiftung der Universität Würzburg.;§Postdoctoral Fellow of the Alexander von Humboldt Foundation.;‖Visiting scientist sponsored by the DAAD program.

Abstract:	Abstract— Excited acetone generated in the thermolysis of tetramethyldioxetane elicits the anomalous S₂→ S₀ fluorescence from azulene and from xanthione. In the case of azulene it could be demonstrated that (i) only the acetone singlets transfer energy to the S ₂ state and (ii) the acetone triplets are quenched. These energy transfer processes are diffusion-controlled.

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