Fluorescence quenching of Safranine T by inorganic ions in reverse micelles of aerosol-OT in heptane

✍ Scribed by Susantamay Nandi; Subhash C. Bhattacharya

• Book ID: 104303366
• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 297 KB
• Volume: 89
• Category: Article
• ISSN: 0167-7322
• DOI: 10.1016/s0167-7322(00)90015-1

✦ Synopsis

The fluorescen~-e quenching of Safranine T (ST) by [Fe(CN)6] ~, [Fe(CN)6] 4", Fe ~', Co 2~ and Cu 2' was studied in Aerosol orange T (AOT) reverse micelles in n-heptane. The quenching process wa:~ exploited to calculate the Stern Volmer quenching constants (Ksv) using Stern Volmer equation, the aggregation number of AOT reverse micelles at different o) values. Upon progressive addition of water to ST/AOT/n-heptane solution, the quenching efficiency increases. The results are interpreted in terms of the variations in the microenvironments of ST which depend in a sensitive manner on the water / Surfactant R0) molar ratio