Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 114, Issue -, Pages 272-276Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2013.05.038
Keywords
Titanium dioxide nano particles; Fluorescence quenching; Fluorescence quenching constant; Stern Volmer plot; Dynamic quenching; Bensi-Hilde brand equation
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Funding
- CSIR, Government of India
- UGC, Government of India
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The dependence of fluorescence emission of 2-amino-3-bromo-1,4-naphthoquinone on titanium dioxide (TiO2) in methanol has been investigated. The increase in TiO2 concentration causes a decrease in the fluorescence intensity of 2-amino-3-bromo-1,4-naphthoquinone. A linear Stern-Volmer plot in this study indicates the presence of dynamic quenching. The quenching and association constants have been calculated. The quenching process is due to the electron transfer from 2-amino-3-bromo-1,4-naphthoquinone to TiO2. (C) 2013 Elsevier B.V. All rights reserved.
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