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Article

Micro-Structured Polydopamine Films via Pulsed Electrochemical Deposition

Institute of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
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Nanomaterials 2019, 9(2), 242; https://doi.org/10.3390/nano9020242
Received: 11 January 2019 / Revised: 4 February 2019 / Accepted: 9 February 2019 / Published: 11 February 2019
(This article belongs to the Special Issue Nanomaterials for Electrocatalytic Applications in Energy and Sensing)
Polydopamine (PDA) films are interesting as smart functional materials, and their controlled structured formation plays a significant role in a wide range of applications ranging from cell adhesion to sensing and catalysis. A pulsed deposition technique is reported for micro-structuring polydopamine films using scanning electrochemical microscopy (SECM) in direct mode. Thereby, precise and reproducible film thicknesses of the deposited spots could be achieved ranging from 5.9 +/− 0.48 nm (1 pulse cycle) to 75.4 nm +/− 2.5 nm for 90 pulse cycles. The obtained morphology is different in comparison to films deposited via cyclic voltammetry or films formed by autooxidation showing a cracked blister-like structure for high pulse cycle numbers. The obtained polydopamine spots were investigated in respect to their electrochemical properties using SECM approach curves. Quantitative kinetic data in dependence of the film thickness, the substrate potential, and the used redox species were obtained. View Full-Text
Keywords: polydopamine; pulsed deposition; scanning electrochemical microscopy; functional groups; electron transfer polydopamine; pulsed deposition; scanning electrochemical microscopy; functional groups; electron transfer
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MDPI and ACS Style

Lin, J.; Daboss, S.; Blaimer, D.; Kranz, C. Micro-Structured Polydopamine Films via Pulsed Electrochemical Deposition. Nanomaterials 2019, 9, 242. https://doi.org/10.3390/nano9020242

AMA Style

Lin J, Daboss S, Blaimer D, Kranz C. Micro-Structured Polydopamine Films via Pulsed Electrochemical Deposition. Nanomaterials. 2019; 9(2):242. https://doi.org/10.3390/nano9020242

Chicago/Turabian Style

Lin, Jing, Sven Daboss, Dominik Blaimer, and Christine Kranz. 2019. "Micro-Structured Polydopamine Films via Pulsed Electrochemical Deposition" Nanomaterials 9, no. 2: 242. https://doi.org/10.3390/nano9020242

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