Abstract
The effect of cationic micelles of benzyldimethylhexadecylammonium chloride and hexadecyltrimethylammonium bromide on the fluorescence spectra of indole and its carboxylic derivatives were determined. The larger solute-micelle binding constants were provided by benzyldimethylhexadecylammonium chloride, ranging from 0.10·105 and 2.15·105 M −1 for indole-5-carboxylic and indole-2-carboxylic acid, respectively. The determination of indole-4-carboxylic acid with a detection limit of 1.0 ng ml−1, in the presence of the 3-and 5-substituted derivatives, shows the analytical potential of the synchronous spectrofluorimetry combined with the enhancement effects caused by micellar media.
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González, A., Linares, R.M., Ayala, J.H. et al. Effects of cationic micelles on fluorescence of indole and indolecarboxylic acids. Analytical determinations. Mikrochim Acta 118, 153–162 (1995). https://doi.org/10.1007/BF01244355
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DOI: https://doi.org/10.1007/BF01244355