| Autor: |
Kalpana Sharma, V. T. Muttannavar, Raveendra Melavanki, N. R. Patil, P. Bhavya, L. R. Naik |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings. |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.5032815 |
| Popis: |
The Steady state and time resolved studies of fluorescence quenching of excitation energy of heterocyclic compound namely 3-[2-Oxo-2-(3-oxo-3H-benzo[f]chromen-2-yl)-ethylidene]-1,3-dihydro-indol-2-one [3OBC] by aniline was carried out in dioxane solvent only with a view to understanding the role of diffusion in the quenching mechanism. The heterocyclic compound is excited directly by UV radiation of 300 nm and probabilities of quenching per encounter p (or p’) were determined in the toluene solvent. Further the activation energy E’a (or E’a) of quenching was determined using the literature values of activation energy of diffusion Ed and the experimentally determined values of p (or p’). Magnitudes of p (or p’) as well as the values of Ea (or E’a) suggests that the quenching reaction is predominantly controlled by material diffusion. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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