Schmidt-Stein F, Gnichwitz JF, Salonen J, Hahn R, Hirsch A, Schmuki P (2009)
Publication Type: Journal article, Original article
Publication year: 2009
Original Authors: Schmidt-Stein F., Gnichwitz J.-F., Salonen J., Hahn R., Hirsch A., Schmuki P.
Publisher: Elsevier
Book Volume: 11
Pages Range: 2000-2003
Journal Issue: 10
DOI: 10.1016/j.elecom.2009.08.038
This work reports on an electrochemical system which allows the control of surface wettability properties by voltage induced changes in contact angle (Θ) of ΔΘ ≥ 50°. For this we used conductive TiO nanotubular layers that were modified with ferrocene coupled to the TiO surface via triethoxysilane. To enhance the hydrophobic character of the nanotubular TiO surface, also mixed organic monolayers namely perfluorotriethoxysilane, were explored. Formation of the ferrocene and mixed organic monolayer was confirmed by X-ray-photoelectron-spectroscopy (XPS). Contact angle combined with electrochemical measurements show that ferrocene in these monolayers can successfully be switched from Fe to Fe and that this change in the redox state considerably alters the wetting properties. Using a conductive nanotube substrate allows us to amplify this change by a factor of more than 10, and thus this surface can be used to trigger significant wetting alterations. © 2009 Elsevier B.V. All rights reserved.
APA:
Schmidt-Stein, F., Gnichwitz, J.-F., Salonen, J., Hahn, R., Hirsch, A., & Schmuki, P. (2009). Electrochemical wettability control on conductive TiO2 nanotube surfaces modified with a ferrocene redox system. Electrochemistry Communications, 11(10), 2000-2003. https://doi.org/10.1016/j.elecom.2009.08.038
MLA:
Schmidt-Stein, F., et al. "Electrochemical wettability control on conductive TiO2 nanotube surfaces modified with a ferrocene redox system." Electrochemistry Communications 11.10 (2009): 2000-2003.
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