Molecular Engineering of Conjugated Polymers for Sensor Applications
Name
MEBCS011.pdf
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170.49 KB
Format
Adobe PDF
Checksum (MD5)
e4d4c4fc639b9a0ecd655c686ee3a24e
Author(s)
Vetrichelvan, Muthalagu
Valiyaveettil, Suresh
Date Issued
January 2006
Series/Report no.
Molecular Engineering of Biological and Chemical Systems (MEBCS)
Abstract
In recent years, the application of fluorescent conjugated polymers for sensing chemical and biological analytes has received much attention from many researchers. A promising development in this direction was the fabrication of conducting polymer-based sensors for the detection of metal ions, small organic molecules and biomolecules. Herein, we have designed, synthesized and studied a series of copolymers containing alternate phenylene and 2,5- or 2,6-substituted pyridine rings. The basic N-atom of the pyridine ring and the adjacent –OH group from the phenyl ring provide binding sites for metal ions. Another series of water-soluble conjugated polymers with propoxy sulfonate side chains are investigated for biosensor applications. Significant quenching of the polymer fluorescence upon addition of viologen derivatives was also observed. The quenching effect on the polymer fluorescence confirmed that the newly synthesized polymers can be useful in the application of metal and biological sensors.
Subjects
Conjugated polymer
poly(para phenylene)
fluorescence
metal ion sensor
biosensor
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