Quenching of the Fluorescence of a Coumarin Derivative by Aromatic Amines
نویسنده
چکیده
The effect of three aromatic amines namely aniline (AN), dimethyl aniline (DMAN) and diethyl aniline (DEAN) on emission properties of a coumarin derivative 6-methyl-3azidoacetyl coumarin (6M3AAC) in acetonitrile was studied by means of steady state fluorescence spectroscopy. The quenching of fluorescence intensity was observed in the presence of amines. The quenching process was characterized by Stern-Volmer (S-V) plots which display usual linear aspect. The experimental data was rationalized in terms of the Marcus theory on the electron transfer reactions. The bimolecular quenching constants and free energy change evaluated by RehmWeller relationship fit well with the data for other coumarin-amine systems.
منابع مشابه
Journal of Engineering, Computers & Applied Sciences (JEC&AS) ISSN No: 2319-5606 Volume 1, No.3, December 2012 _________________________________________________________________________________
The effect of three aromatic amines namely aniline (AN), dimethyl aniline (DMAN) and diethyl aniline (DEAN) on emission properties of a coumarin derivative 6-methyl-3azidoacetyl coumarin (6M3AAC) in acetonitrile was studied by means of steady state fluorescence spectroscopy. The quenching of fluorescence intensity was observed in the presence of amines. The quenching process was characterized b...
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