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Fluorescence Quenching of DMB by Aniline in Benzene-Acetonitrile Mixture
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Fluorescence Quenching of DMB by Aniline in Benzene-Acetonitrile Mixture

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Abstract:

The fluorescence quenching of coumarin dye namely 4-(2,6-dibromo-4-methyl-phenoxymethyl)-benzo[h]chromen-2-one [DMB] has been studied by aniline, in a different solvent mixture of benzene (BN) and acetonitrile (AN) at room temperature. The quenching is found to be appreciable and shows positive deviation from linearity in the Stern-Volmer (S-V) plots for all the solvent mixtures. The various rate parameters responsible for fluorescence quenching have been determined using a sphere of action static quenching model and finite sink approximation model. The magnitudes of these rate parameters indicate that positive deviation in the S-V plot is due to both static and dynamic quenching processes.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 65)
Pages:
32-36
DOI:
https://doi.org/10.18052/www.scipress.com/ILCPA.65.32
Citation:
A. H. Sidarai et al., "Fluorescence Quenching of DMB by Aniline in Benzene-Acetonitrile Mixture", International Letters of Chemistry, Physics and Astronomy, Vol. 65, pp. 32-36, 2016
Online since:
April 2016
Authors:
Ashok H. Sidarai, Vani R. Desai, Shirajahammad M. Hunagund, Mahantesha Basanagouda, Jagadish S. Kadadevarmath
Keywords:
Finite Sink Approximation Model, Fluorescence Quenching, Sphere of Action Static Quenching Model
Export:
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Distribution:
Open Access

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This work is licensed under a
Creative Commons Attribution 4.0 International License

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