Journal
SOFT MATTER
Volume 8, Issue 35, Pages 9110-9114Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2sm26274f
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An original fluorinated EDOT derivative was synthesized by grafting a F-octyl tail directly onto an EDOT heterocycle and was used to elaborate superhydrophobic surfaces by electrodeposition. The control of the deposition charge allows one to reach versatile surface wettability from sticky to non-sticky. At low deposition charges (between 100 and 200 mC cm(-2)), the surface is composed of nanofiber arrays (vertically aligned) and displays superhydrophobic contact angles (approximate to 160 degrees), low hysteresis (H approximate to 4 degrees) and sliding angles of approximate to 2 degrees. At high deposition charges (above 200 mC cm(-2)), the nanofibers self-assemble to form flower-like structures and an increase in the adhesion from non-sticky to sticky is observed. Hence, we demonstrate the possibility to reach nanofiber arrays without hydrogen bonds, by using steric hindrances induced by fluorinated chains.
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