Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Electrochemical Study of Chitosan Films Deposited on Gold Electrodes



Rebecca A. Zangmeister, J J. Park, G W. Rubloff, Michael J. Tarlov


We report the electrochemical characterization of chitosan films deposited on gold electrodes. Cyclic voltammetry was used to characterize the deposition and electroactivity of chitosan coated gold electrodes. Chitosan films were found to deposit at a gold electrode due to a local increase in pH at potentials more negative than 1.5 V vs. Ag/AgCl, a potential associated with the hydrolysis of water. The chitosan films are electrochemically inactive, and similar background charging currents are observed at bare gold and chitosan coated electrodes. The chitosan films are permeable to both cationic [Ru(NH3)63+/2+] and anionic [Fe(CN)63-/4-] redox couples, but anionic complexes are retained in the chitosan film. Semiintegral analysis was used to examine adsorbed redox species at the chitosan coated electrode surface. Electrochemical parameters, including diffusion coefficients, for the redox probes at the chitosan modified electrodes are presented.


anion exchange, biosensing, chitosan, electrochemistry, ion diffusion


Zangmeister, R. , Park, J. , Rubloff, G. and Tarlov, M. (2006), Electrochemical Study of Chitosan Films Deposited on Gold Electrodes, Langmuir (Accessed May 21, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created July 28, 2006, Updated February 19, 2017