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Observation of a fluorescent dimer of a sulfonated phthalocyanine
Neil M Speirs1, Warren J Ebenezer, Anita C Jone
1Department of Chemistry, The University of Edinburgh, Edinburgh, UK.
Photochemistry and Photobiology
|October 31, 2002
Abstract:
With very few exceptions, phthalocyanine dimers are found to be nonfluorescent. We report here the observation of a fluorescent dimer of a tetrasulfonated copper phthalocyanine in ethanol and water. Fluorescence excitation and emission spectra at room temperature and at 77 K are presented. These are consistent with the conventional model of exciton coupling in a cofacial dimer.