Analysis of Fluorescence Quenching of Coumarin Derivative Dye Using Stern-Volmer Plots

摘要

Fluorescence quenching of newly synthesized coumarin derivative dye; 4-((4-methoxyphenoxy)methyl)-6-methoxy-2H-chromen-2-one(4-MPMMC) has been studied in Acetonitrile, Benzene, 1-Butanol, Ethyl acetate and Ethanol using Aniline as a quencher at room temperature considering the role of diffusion in the quenching process. In all the solvents the probability of quenching per encounter (p) is calculated. Further using the value of p, activation energy for quenching and activation energy for diffusion were estimated.