کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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596842 | 1454055 | 2008 | 7 صفحه PDF | دانلود رایگان |
The emission properties of 1-anthracene sulphonate (1-AS) have been studied in cationic micellar media of alkyl trimethyl ammonium bromides (CnTAB) of varying chain lengths. The changes in the emission characteristics as a function of surfactant concentration have been utilized to determine the binding constant of the probe with the micelles and location of the probe within these micelles. The interactions of 1-AS with the cationic micelles depend on the hydrophobic chain length of the cationic surfactants. The binding constants of 1-AS with CnTAB micelles decrease with decreasing n. The fluorescence of 1-AS is quenched by cetyl pyridinium chloride (CpCl) at the surface of the cationic micelles. The rate of fluorescence quenching decreases with decrease in alkyl chain length of the cationic surfactants.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 317, Issues 1–3, 20 March 2008, Pages 585–591