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Chemical Physics

Abstract:

The quenching of the 1-methylpyrene (1-MePy) fluorescence by mobile (iodide ion, m-dicyanobenzene) as well as immobile (N-methyl-N-decylaniline, tetradecylpyridinium chloride) quenchers has been used to study the aqueous micellar systems of cetyltrimethylammonium chloride (CTAC), tetradecyltrimethylammonium chloride (TTAC), and dodecyltrimethylammonium chloride (DTAC). Fluorescence quenching allows the determination of the aggregation number, as one of the important parameters of the micelle. This study evaluates the influence of structural factors (chain length, headgroup) as well as environmental factors (detergent concentration such as addition of electrolyte, temperature, and counterion) on micellization. © 1987, American Chemical Society. All rights reserved.