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3-(Pyridine-4-thione)BODIPY as a chemodosimeter for detection of Hg(II) ions

DSpace at IIT Bombay

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Title 3-(Pyridine-4-thione)BODIPY as a chemodosimeter for detection of Hg(II) ions
 
Creator KHAN, TK
RAVIKANTH, M
 
Subject Boron-dipyrromethene
Pyridine-4-one
Pyridine-4-thione
Desulfurization
Fluorescence sensor
Chemodosimeter
FLUORESCENT SENSOR
HG2+-SELECTIVE CHEMODOSIMETER
AQUEOUS-SOLUTION
MERCURIC ION
BODIPY DYES
CHEMOSENSOR
HG2+
8-HYDROXYQUINOLINE
DIPYRROMETHENE
SENSITIVITY
 
Description A new chemodosimeter for detection of Hg(II) ions based on boron-dipyrromethene (BODIPY) is developed. The 3-(pyridine-4-thione)BODIPY was synthesized in high yield by treating 3-(pyridine-4-one)BODIPY with Lawesson's reagent. The 3-(pyridine-4-thione) BODIPY was confirmed by HR-MS mass, H-1, H-1-H-1 COSY, F-19 and B-11 NMR techniques. In H-1 NMR, the protons which are adjacent to sulfur in 3-(pyridine-4-thione)BODIPY showed similar to 1 ppm downfield shift compared to equivalent protons in 3-(pyridine-4-one)BODIPY. The absorption and electrochemical properties experienced slight changes in 3-(pyridine-4-thione)BODIPY compared to 3-(pyridine-4-one)BODIPY. The compound 3-(pyridine-4-thione)BODIPY is very weakly fluorescent compared to 3-(pyridine-4-one)BODIPY. Furthermore, 3(pyridine-4-thione)BODIPY can be used as an exclusive chemodosimeter for Hg2+ ion as it shows significant enhancement in the fluorescence intensity and a dramatic visible color change from pink to fluorescent green in the presence of Hg(II) ions. (C) 2012 Elsevier Ltd. All rights reserved.
 
Publisher ELSEVIER SCI LTD
 
Date 2014-10-16T06:38:09Z
2014-10-16T06:38:09Z
2012
 
Type Article
 
Identifier DYES AND PIGMENTS, 95(1)89-95
http://dx.doi.org/10.1016/j.dyepig.2012.03.015
http://dspace.library.iitb.ac.in/jspui/handle/100/15453
 
Language en