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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2295
Title: Amphiphiles as hydrophobicity regulator: Fine tuning the surface hydrophobicity of an electropolymerized film
Authors: Dutta K.
Kundu, Patit Paban
Published in: Journal of Colloid and Interface Science
Abstract: Smart clean surfaces exhibiting reversible superhydrophilic to superhydrophobic transitions have been widely fabricated. A myriad of complex fabricating procedures have evolved over the years. Here, we demonstrate an apparently simple approach, wherein we utilized the attractive interaction between an unfabricated electropolymerized film and negative charge bearing amphiphilic molecules to precisely control the hydrophobicity of the surface of the film. We also demonstrate the use of different hydrophobic molecules to plug the voids created by the uneven distribution of the attached amphiphiles' long hydrocarbon tails on the film surface. Water drop contact angle revealed that by the used technique, surface hydrophobicity can be tuned to any desired value. Moreover, the film surface exhibited a high adhesive force toward the water droplets, thus preventing them from rolling or dropping down. In addition, the tuning process can be completely reversed and repeated by altering the applied potential. The interaction between the amphiphiles and the film surface was confirmed by ATR-IR. Scanning electron micrographs revealed that the film surface underwent no morphological modifications upon interaction with the amphiphiles. © 2013 Elsevier Inc.
Citation: Journal of Colloid and Interface Science (2013), 397(): 192-198
URI: https://doi.org/10.1016/j.jcis.2013.01.045
http://repository.iitr.ac.in/handle/123456789/2295
Issue Date: 2013
Keywords: Lotus effect
Petal effect
Reversible wettability
Surface wettability
ISSN: 219797
Author Scopus IDs: 7005115695
35475516300
Author Affiliations: Dutta, K., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, India
Kundu, P.P., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, India
Funding Details: KD would like to thank Dr. K. Krishnamoorthy for valuable discussions. PPK is thankful to the Council of Scientific and Industrial Research for a grant-in-aid and a fellowship to KD. Appendix A
Corresponding Author: Dutta, K.; Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, India; email: kingshukdutta.pst@gmail.com
Appears in Collections:Journal Publications [CH]

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