EFFECT OF HYDROGEN BONDING ON FLUORESCENCE QUENCHING OF QUINOLIN-8-OL - ANALYSIS USING NEGATIVE STERN-VOLMER PLOTS
| Autor: | V. T. Muttannavar, Kalpana Sharma, Raviraj Kusanur, L. R. Naik, Raveendra Melavanki, P. Bhavya |
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| Rok vydání: | 2022 |
| Předmět: |
0301 basic medicine
03 medical and health sciences 030104 developmental biology Chemistry Hydrogen bond General Engineering General Earth and Planetary Sciences 02 engineering and technology 021001 nanoscience & nanotechnology 0210 nano-technology Photochemistry Stern volmer General Environmental Science |
| Zdroj: | International Journal of Life Science and Pharma Research. |
| ISSN: | 2250-0480 |
| DOI: | 10.22376/ijpbs/lpr.2018.8.3.l16-23 |
| Popis: | Photophysics of fluorescent organic compounds give a better knowledge of the excited state properties which in turn will help in the design of newer molecules and understanding their performance in specific applications. Here we present the fluorescence quenching study of a Quinolin-8-ol (QO) in toluene and butanol solvents by steady state fluorescence measurements. Anilineis the quencher. Negative deviation in the Stern – Volmer (S-V) plots has been observed with moderate quencher concentration. The downward curvature in the S-V plot is interpreted in terms of existence of different conformers of the solute in the ground state. The formation of intermolecular and intra molecular hydrogen bonding is found to be responsible for the conformational changes in the ground state of the solute. Quenching data is analyzed by modified Stern-Volmer equation or Lehrer equation. |
| Databáze: | OpenAIRE |
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