Next Article in Journal
The Self-Assembly of Lignin and Its Application in Nanoparticle Synthesis: A Short Review
Previous Article in Journal
Preparation and Characterization of Biomimetic Hydroxyapatite Nanocrystals by Using Partially Hydrolyzed Keratin as Template Agent
Previous Article in Special Issue
Voltammetric Detection of Caffeine in Beverages at Nafion/Graphite Nanoplatelets Layer-by-Layer Films
Open AccessArticle

Micro-Structured Polydopamine Films via Pulsed Electrochemical Deposition

Institute of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(2), 242;
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
Show Figures

Graphical abstract

MDPI and ACS Style

Lin, J.; Daboss, S.; Blaimer, D.; Kranz, C. Micro-Structured Polydopamine Films via Pulsed Electrochemical Deposition. Nanomaterials 2019, 9, 242.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop