Evaluation of Surface-Bound Membranes with Electrochemical Impedance Spectroscopy.

摘要

Membrane structures containing the visual receptor protein, rhodopsin, were formed by detergent dialysis on platinum, silicon oxide, titanium oxide and indium/tin oxide electrodes. Electrochemical impedance spectroscopy was used to evaluate the biomembrane structures and their electrical properties. A model equivalent circuit is proposed to describe the membrane electrode interface. The data suggest that the surface structure is a relatively complete single membrane bilayer with a coverage of 0.97, and with longterm stability.