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conferenceseries
.com
November 13-15, 2017 | Las Vegas, USA
14
th
International Conference and Exhibition on
Materials Science and Engineering
RRJOMS | Volume 5 | Issue 7 | November, 2017
Spectroscopic interaction of TiO
2
NPs with a novel biologically active 3(
2H
)-pyridazinone derivative: A
Fluorescence Quenching Study
Ashok H Sidarai, Shirajahammad M Hunagund, Vani R Desai, Malatesh S Pujar
and
Shivaprasadagouda Patil
Karnatak University, India
T
he effect of titanium dioxide (TiO
2
) 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 TiO
2
NPs concentration. The association constant (
k
a
) of BHP molecule with TiO
2
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 TiO
2
NPs, fluorescence quenching in the said system is purely dynamic in nature
and also there exist one binding site in BHP molecule for TiO
2
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 TiO
2
NPs. The results of present investigations may shine in variety of applications, such as to sensitize the TIO
2
for solar energy
conversion and biological sensing etc.
ashok_sidarai@rediffmail.comRes. Rev. J Mat. Sci. 2017, 5:7
DOI: 10.4172/2321-6212-C1-012