Issue 18, 2016

In vitro electrochemical characterization of polydopamine melanin as a tissue stimulating electrode material

Abstract

The properties of redox active polydopamine melanin (PDM) films as a coating material for tissue stimulation electrodes were evaluated. PDM films with nanometer-scale thicknesses exhibit dc bias dependent charge injection capacities (CIC) with maximum values of 110 ± 23 μC cm−2 at 0.2 V (vs. Ag/AgCl) and reduce the interfacial impedance compared to inorganic conducting films. PDM films exhibit an asymmetric impedance response to positive and negative dc biases with minimum interfacial impedance at 0.2 V (vs. Ag/AgCl). An explanation for the observed bias-dependent electrochemical behavior is presented.

Graphical abstract: In vitro electrochemical characterization of polydopamine melanin as a tissue stimulating electrode material

Supplementary files

Article information

Article type
Communication
Submitted
29 صفر 1437
Accepted
09 جمادى الأولى 1437
First published
14 جمادى الأولى 1437

J. Mater. Chem. B, 2016,4, 3031-3036

In vitro electrochemical characterization of polydopamine melanin as a tissue stimulating electrode material

I. S. Kwon, Y. J. Kim, L. Klosterman, M. Forssell, G. K. Fedder and C. J. Bettinger, J. Mater. Chem. B, 2016, 4, 3031 DOI: 10.1039/C5TB02618K

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