Synthesis, characterization and Application of Sulfonated polyaniline in Construction of a biosensor for Diazinon

Citation:
Michira IN, Richard A, Priscilla B, Immanuel I. "Synthesis, characterization and Application of Sulfonated polyaniline in Construction of a biosensor for Diazinon." International Journal of Polymeric Materials. 2011;60:469-489.

Abstract:

A series of sulfonated polyaniline=derivatized polyaniline nanocomposites was chemically synthesized in the presence of anthracene and naphthalene sulfonic acids. UV-vis and FTIR results indicated the emergence of new bands at 420 and 700nm and1100cm-1 in their spectra, respectively, meaning the dopant/polymer intercalations involved electronic interactions between dopant/polymer sub-lattices. The electroactive
composites displayed moderately fast electrode kinetics. A composite-based biosensor for hydrogen peroxide reached a steady state current of 9.2 and 5.3 mA, and when fine-tuned for diazinon detection gave % inhibitions to be 41 and 81% for thepolyaniline and poly-o-methoxyaniline biosensors, respectively.

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