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http://nopr.niscpr.res.in/handle/123456789/55740
Title: | Selective detection of fluoride and hydrogen sulfate anions by pyrimidine-based fluorescence chemosensor |
Authors: | Thakur, Soumya R Behura, R Behera, S Sayala, Rajesh B Barick, Arun K Ramakrishna, D S Jali, Bigyan R |
Keywords: | Fluorescence sensor;Pyrimidine-based probe;Binding constant;Colour change;Photo-induced electron transfer |
Issue Date: | Dec-2020 |
Publisher: | NISCAIR-CSIR, India |
Abstract: | The binding and sensing abilities of pyrimidine based fluorescence chemosensor L towards different anions such as F-, Cl-, Br-, I-, NO3-, ClO4-, H2PO4- and HSO4- have been examined by fluorescence spectroscopy in DMSO-H2O (7: 3, v/v). Upon successive addition of various anions to DMSO-H2O solutions of L; quenching in emission fluorescence is observed at 480 nm. Analysis of fluorescence emission changes suggested the formation of 1:1 complex of L with the anions. From the fluorescence binding constant data, it is found that L form strong complexes with F- and HSO4- ions through H-bonding interactions. The selective response of F- over other halides and HSO4- amongst other oxo-anions towards L may be explained on the basis of photo-induced electron transfer process. |
Page(s): | 1809-1813 |
ISSN: | 0975-0975(Online); 0376-4710(Print) |
Appears in Collections: | IJC-A Vol.59A(12) [December 2020] |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
IJCA 59A(12) 1809-1813.pdf | Main Article | 476.9 kB | Adobe PDF | View/Open |
IJCA 59A(12) 1809-1813_Suppl Data.pdf | Supplementary Data | 788.46 kB | Adobe PDF | View/Open |
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