Research & Reviews: Journal of Material Sciences
MenuISSN:2321-6212
ISSN:2321-6212
Ashok H Sidarai, Shirajahammad M Hunagund, Vani R Desai, Malatesh S Pujar and Shivaprasadagouda Patil
Karnatak University, India
Posters & Accepted Abstracts: Res. Rev. J Mat. Sci
The effect of titanium dioxide (TiO2) nanoparticles (NPs) concentrations on spectroscopic measurements for a novel 3(2H)pyridazinone; 5-(5-bromo-2-hydroxy-phenyl)-2-phenyl-2H-pyridazin-3-one (BHP) molecule in ethanol solvent has been investigated using UV-Visible spectrophotometer, fluorescence spectrophotometer and time correlated single photon counting techniques at room temperature. The values of absorption, fluorescence intensity and fluorescence lifetime of BHP molecule decreases with increase in TiO2 NPs concentration. The association constant (ka) of BHP molecule with TiO2 NPs in the ground state is estimated using the Benesi–Hildebrand relation. A linear Stern–Volmer (S-V) plot is obtained in steady state and transient state studies. In addition, we have estimated the binding constant and number of binding sites. Results revealed that there is a strong interaction between investigated molecule with TiO2 NPs, fluorescence quenching in the said system is purely dynamic in nature and also there exist one binding site in BHP molecule for TiO2 NPs. Furthermore, we studied the energy transfer in fluorescence quenching by the Forster’s non-radiative energy transfer (FRET) theory it reveals that there is an energy transfer from BHP molecule to TiO2 NPs. The results of present investigations may shine in variety of applications, such as to sensitize the TIO2 for solar energy conversion and biological sensing etc.