Abstract
Monomer and excimer emissions are observed in aqueous solutions of sodium poly(styrenesu1fonate). The excimer-to-monomer emission intensity ratios (ZEIZM) are between 1 and 2.1 and increase with polymer concentration. From measurements of ZE/IM and the lifetimes of these emissions, the rate constants for excimer formation, dissociation, and radiative and nonradiative deactivation processes, and the quenching constants with CoS04 and NaN02, are estimated. The contributions of the regular configurational alignment of the hydrophilic and hydrophobic moieties of the polymer and the electrostatic interactions between monomer units are suggested to be the main factors controlling excimer formation.
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