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Radiationless processes in aggregated chromophores of the dye diethylthiadicarbocyanineiodide in aqueous solution

Villy Sundström and Tomas Gillbro

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Abstract

The photophysical properties of aggregated chromophores are of interest for several reasons. Fluorescense quenching in concentrated dye solutions is believed to take place through the trapping and subsequent radiationless dissipation of the excitation energy by dimers of the chromophores. Some spectral features of several pigment systems of biological importance are attributed to dimers or higher aggregates of the chromophores of the pigments.

© 1984 Optical Society of America

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