Solvation Dynamics of Coumarin 480 in Reverse Micelles. Slow Relaxation of Water Molecules
作者： Nilmoni Sarkar , Kaustuv Das , Anindya Datta , Swati Das , Kankan Bhattacharyya
DOI: 10.1021/JP953658L
关键词: Picosecond 、 Dye laser 、 Fluorescence 、 Nanosecond 、 Solvation 、 Photochemistry 、 Chemistry 、 Stokes shift 、 Micelle 、 Relaxation (NMR)
摘要: The picosecond time-resolved Stokes shift of the laser dye coumarin 480 (I) is studied in Aerosol OT-heptane reverse micelles at various concentrations water. On addition water to a n-heptane solution I containing 0.09 M AOT, emission spectrum exhibits prominent shoulder nm which ascribed molecules pool micelles. In n-heptane, fluorescence decays short and long wavelengths are identical, rules out any shift. AOT/heptane system, decay exhibit distinct growth on nanosecond time scale. This time-dependent indicate that AOT undergo slow relaxation
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