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Interaction of the excited singlet state of disubstituted anthraquinones with aliphatic and aromatic amines: a fluorescence quenching study

Authors
Journal
Journal of Photochemistry and Photobiology A Chemistry
1010-6030
Publisher
Elsevier
Publication Date
Volume
73
Issue
1
Identifiers
DOI: 10.1016/1010-6030(93)80028-8

Abstract

Abstract Fluorescence from 1,4-amino- and hydroxy-disubstituted 9,10-anthraquinones was quenched by a number of aliphatic and aromatic amines and diamines. The quenching mechanism has been shown to involve electron transfer (ET) from the ground state of the amines to the excited S 1 state of the quinones. Bimolecular quenching rate constants have been correlated with the free energy changes of the ET reactions in accordance with Marcus theory.

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