title: Electrochemical deposition of conductive and adhesive polypyrrole-dopamine films.
abstract: Electrode surfaces have been widely modified with electrically conductive polymers, including polypyrrole (PPY), to improve the performance of electrodes. To utilize conductive polymers for electrode modification, strong adhesion between the polymer films and electrode substrates should be ensured with high electrical/electrochemical activities. In this study, PPY films were electrochemically polymerized on electrodes (e.g., indium tin oxide (ITO)) with dopamine as a bio-inspired adhesive molecule. Efficient and fast PPY electrodeposition with dopamine (PDA/PPY) was found; the resultant PDA/PPY films exhibited greatly increased adhesion strengths of up to 3.7 ± 0.8 MPa and the modified electrodes had electrochemical impedances two to three orders of magnitude lower than that of an unmodified electrode. This electrochemical deposition of adhesive and conductive PDA/PPY offers a facile and versatile electrode modification for various applications, such as biosensors and batteries.
authors.affiliation: Gwangju Institute of Science and Technology, School of Materials Science and Engineering, Gwangju, Gwangju 500-712, Republic of Korea.
authors.forename: Semin
authors.initials: S
authors.lastname: Kim
authors.affiliation: Gwangju Institute of Science and Technology, School of Materials Science and Engineering, Gwangju, Gwangju 500-712, Republic of Korea.
authors.forename: Lindy K
authors.initials: LK
authors.lastname: Jang
authors.affiliation: Korea Institute of Science and Technology, Fuel Cell Research Center, Hwarangro 14-gil 5, Seoul 02792, Republic of Korea.
authors.forename: Hyun S
authors.initials: HS
authors.lastname: Park
authors.affiliation: Gwangju Institute of Science and Technology, School of Materials Science and Engineering, Gwangju, Gwangju 500-712, Republic of Korea.|Gwangju Institute of Science and Technology, Department of Biomedical Science and Engineering, Gwangju, Gwangju 500-712, Republic of Korea.
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Lee