One-Step Electrosynthesis of Graphene Oxide-Doped Polypyrrole Nanocomposite as a Nanointerface for Electrochemical Impedance Detection of Cell Adhesion and Proliferation Using Two Approaches

Figure 8

Cell adhesion and proliferation behaviors on GO/PPy-ITO electrode measured by Faraday electrochemical impedance spectroscopy. (a) Faraday electrochemical impedance spectra recorded on bare ITO (A) and GO/PPy nanocomposite film-modified ITO electrode (B) and after A549 cell incubation on a GO/PPy nanocomposite film-modified ITO electrode for 2 h (C), 24 h (D), 48 h (E), and 72 h (F). (b) Relationship curve between electron transfer resistance and the A549 incubation time. (c) Correlation analysis between the absorbance measured by WST-8 and electron transfer resistance . (d) Relationship curves between the normalized electron transfer resistance and incubation time for different electrodes.

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