Journal ArticleDOI
Molecular Sensors and Sensor Arrays Based on Polyaniline Microtubules
Sukeerthi S,A.Q. Contractor +1 more
TLDR
The fabrication of microtubular biosensors and sensor arrays based on polyaniline with superior transducing ability are described, resulting in a microtubule array that can analyze a sample containing a mixture of glucose, urea, and triglycerides in a single measurement.Abstract:
This paper describes the fabrication of microtubular biosensors and sensor arrays based on polyaniline with superior transducing ability. These sensors have been tested for the estimation of glucose, urea, and triglycerides. As compared to that of a macro sensor, the response of the microtubular sensor for glucose is higher by a factor of more than 103. Isoporous polycarbonate membranes have been used to fabricate inexpensive devices by simple thermal evaporation of gold using appropriate machined masks. Polyaniline deposition and enzyme immobilization have been done electrochemically. Electrochemical potential control has been used to direct enzyme immobilization to the chosen membrane device and avoid cross talk with adjacent devices. This has enabled the immobilization of a set of three different enzymes on three closely spaced devices, resulting in a microtubule array that can analyze a sample containing a mixture of glucose, urea, and triglycerides in a single measurement. This, in essence, is an “el...read more
Citations
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Journal ArticleDOI
Polyaniline Nanofiber Gas Sensors: Examination of Response Mechanisms
TL;DR: In this article, a new interfacial polymerization method for the synthesis of polyaniline nanofibers was used and compared with conventional polyanile sensors, and five different response mechanisms were explored: acid doping (HCl), base dedoping (NH3), reduction (with N2H4), swelling (with CHCl3), and polymer chain conformational changes (induced by CH3OH).
Journal ArticleDOI
Organic Thin‐Film Transistors for Chemical and Biological Sensing
TL;DR: This paper reviews the chemical sensors and biosensors based on two types of OTFTs, including organic field-effect transistors (OFETs) and organic electrochemical transistor (OECTs), mainly focusing on the papers published in the past 10 years.
Journal ArticleDOI
Chemical and biological sensors based on organic thin-film transistors.
TL;DR: This review covers transistors that are based on the modulation of current through thin organic semiconducting films, and includes both field-effect and electrochemical transistors.
Journal ArticleDOI
Comparative studies of solid-state synthesized polyaniline doped with inorganic acids
TL;DR: In this paper, polyaniline (PANI) was synthesized with inorganic acids (HCl, H2SO4 and H3PO4) by using solid-state polymerization method.
Journal ArticleDOI
Synthesis and characterization of polyaniline nanoparticles in SDS micellar solutions
TL;DR: Polyaniline dispersions consisting of 10-20nm sized nanoparticles were prepared by oxidation with ammonium peroxydisulfate (APS) in SDS micellar solutions as discussed by the authors.
References
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Template Synthesis of Electronically Conductive Polymer Nanostructures
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The concept of secondary doping as applied to polyaniline
TL;DR: In this article, the effects of secondary doping on polyaniline and its derivatives are shown to be based primarily on a change in molecular conformation of the polymer from "compact coil" to "expanded coil".