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Published September 2004 | public
Journal Article

Electrochemically Fabricated Polyaniline Nanoframework Electrode Junctions that Function as Resistive Sensors


In this paper, we demonstrate a template-free, site-specific, and scalable electrochemical method for the fabrication of individually addressable polyaniline nanoframework electrode junctions in a parallel-oriented array. These polyaniline nanoframeworks, which are composed of numerous intercrossing polyaniline nanowires that have uniform diameters ranging from 40 to 80 nm, can be used for the chemical sensing of HCl and NH_3 gases and ethanol vapor and for sensing the pH of aqueous NaCl solutions.

Additional Information

© 2004 American Chemical Society. Received June 9, 2004; Revised Manuscript Received July 12, 2004. Publication Date (Web): July 29, 2004. The research was supported by the Crump Institute for Molecular Imaging and by the Department of Molecular and Medical Pharmacology in the David Geffen School of Medicine at UCLA. Y.L., G.G., R.S.S., and J.R.H. acknowledge the Institute for Collaborative Biotechnologies through grant DAAD19-03-D-0004 from the U.S. Army Research Office. We thank Professor Ric Kaner and Jiaxing Huang in the Department of Chemistry and Biochemistry at UCLA for valuable discussions concerning the pH sensing experiments.

Additional details

August 19, 2023
October 26, 2023