Synthesis and characterization of modified polyanilines for glucose, urea and triglyceride sensors.

Conducting polymers like Polyaniline, Polypyrrole and Polythiophenes with their unique optical and electronic properties show promising applications in the development of biosensors and chemical sensors. The present work represents the modification of properties of polyaniline (PANI) by synthesizing the polymer in presence of an anionic surfactant, sodium dodecyl sulfate (SDS), anionic polyelectrolyte, poly(styrene sulfonate) (PSS) or by substituting a sulfonate group on the polymer backbone. The ultimate goal was to develop miniaturized sensors for glucose, urea and triglyceride based on these modified polyanilines and compare with that of parent polyaniline. The characterization of these modified polyaniline films were carried out by cyclic voltammetry, chronoamperometry, electrochemical quartz crystal microbalance measurements, extitin situfootnotesize resistance measurement of the polymer at different pHs, polarized FTIR of the polymer and scanning electron microscopic studies and compared with that of parent PANI films. More Info

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