Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5404396 | Journal of Luminescence | 2006 | 8 Pages |
Abstract
The fluorescence quenching of 5-methyl-3-phenyl-2-[4â²-amino-s-triazolo-3â²-yl] indole-5â²-hydrazide (MPIH) by aniline quencher in cyclohexane, benzene, toluene and dioxane solvents has been carried out at room temperature with a view to understand the quenching mechanisms. The quenching is found to be appreciable and shows positive deviation in the Stern-Volmer plots. The various quenching parameters have been determined using modified Stern-Volmer equation, which suggests that the sphere of action static quenching model agrees very well with the experimental results and this positive deviation is attributed to the static and dynamic quenching. Further, with the use of the finite sink approximation model, it is concluded that these bimolecular quenching reactions are diffusion limited and the distance parameter Râ² and mutual diffusion co-efficient D are estimated independently.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
H.M. Suresh Kumar, R.S. Kunabenchi, J.S. Biradar, N.N. Math, J.S. Kadadevarmath, S.R. Inamdar,