Fluoreszenzlöschung und Excimerenbildung von Pyren‐3‐sulfonat in wäßrigen Lösungen von Polydimethyldiallylammoniumchlorid

Abstract
Quenching of Fluorescence and Excimer Formation of Sodiumpyren‐3‐sulfonate in Aqueous Solutions of Polydimethyldiallylammonium ChlorideThe fluorescence spectra and lifetimes of sodium‐pyren‐3‐sulfonate have been measured in the presence of polydimethyldiallylammonium chloride. It is shown, that the excimer formation by static self‐quenching of fluorescence of the pyren‐3‐sulfonate is based on the cooperative effect of the macroion. The association constants of interaction between the aromatic compound and the polycation are determined. Presence of diazoniumcations leads to quenching of fluorescence of pyren‐3‐sulfonate in both the polyelectrolyte and aqueous phases. The quenching constants are discussed.

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