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Effect of fluorescence quenching model on quinoline derivative with cobalt chloride metal ion using steady state and time resolved spectroscopic methods |
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| Authors: | Raveendra Melavanki Vijaya Kumar Diksha Singh Nishant Dhiman Varsha V. Koppal N. R. Patil |
| Affiliation: | 1. Department of Physics, M. S. Ramaiah Institute of Technology, Bangalore, Karnataka, India;2. Department of Mathematics, M. S. Ramaiah Institute of Technology, Bangalore, Karnataka, India Autonomous, affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, India;3. Department of Physics, M. S. Ramaiah Institute of Technology, Bangalore, Karnataka, India Autonomous, affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, India;4. Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, Karnataka, India;5. Department of Physics, B V B College of Engineering and Technology, Hubli, Karnataka, India Autonomous, affiliated to Visvesvaraya Technological University, Belagavi, Karnataka, India |
| Abstract: | Quinoline derivative, i.e. quinilone yellow with the scientific name [sodium 2-(2,3-dihydro-1,3-dioxo-1H-inden-2-yl)quinoline-6,8-disulphonate] (SQDS) is analysed for fluorescence resonance energy transfer (FRET). Fluorescence quenching mechanism is studied by employing steady state and transient state spectroscopic measurements. Cobalt chloride is used as quencher in the present study. Linearity was observed in Stern–Volmer plots for transient state as well as steady state. This was further attributed to a mechanism of collisional quenching. Efficiency in fluorescence quenching is observed as there is a correlation between quenching constants of both transient and steady state. A significant energy transfer is reported between metal ions and SQDS molecule, according to FRET theory. Characterization results are studied and analysed. Application in the field of non-linear optics are predicted for SQDS. With Kurtz and Perry powder technique, SHG (second harmonic generation) efficiency was measured using Q-switched mode locked Nd:YAG laser emitting 1064 nm the first time with this compound. |
| Keywords: | fluorescence quenching fluorescence resonance energy transfer (FRET) metal ion Quinoline derivative |