Quenching of excimers by electron donors

The quenching of excimers of pyrene and 9,10-dichloroanthracene by electron donors in toluene, ethanol and acetonitrile has been investigated. The excimer quenching rate constants are substantially lower than those of the parent excited molecules. The decrease in the reactivity of the excited molecu...

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Bibliographic Details
Published in:Journal of photochemistry 1985-12, Vol.31 (2), p.247-252
Main Authors: Sadovskii, N.A., Shilling, R.-D., Kuzmin, M.G.
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
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Summary:The quenching of excimers of pyrene and 9,10-dichloroanthracene by electron donors in toluene, ethanol and acetonitrile has been investigated. The excimer quenching rate constants are substantially lower than those of the parent excited molecules. The decrease in the reactivity of the excited molecules arising from excimer formation is related to the enthalpy of formation of the excimer. The rate constants for quenching of the excimers were found to be affected only slightly by the polarity of the medium.
ISSN:0047-2670
DOI:10.1016/0047-2670(85)85093-0