Electrochemistry of viologen-containing Langmuir-Blodgett film prepared by polyion complex technique

Abstract

Due to the electrostatic interaction at the air-water interface, a stable monolayer of a water-soluble viologen amphiphile was formed on an aqueous solution of a counter charged polymer. Pressure-area isotherms of the polyion-complexed monolayers were strongly dependent on the chemical structure of the aniomic polymers. The polyion-complexed monolayers were transferred on an ITO electrode as Langmuir-Blodgett films. The redox potential of the polyion-complexed LB film was also dependent on the chemical structure, especially the charge density, of the polymers.