Nanostructured superhydrophobic films by electrodeposition of fluorinated polyindoles
Résumé
Materials with bioinspired superhydrophobic properties are highly desirable for many potential applications. Here, nine novel monomers derived from indole are synthesized to obtain these properties by electropolymerization. These monomers differ by the length (C4F9, C6F13 and C8F17) and the position (4, 5 and 6-position on indole) of the perfluorinated substituent. Polymeric films were obtained with C4F9 and C6F13 chains and differences in surface morphology are revealed especially with the substituent position. The polyindoles presented hydrophobic and superhydrophobic properties even with a very low roughness. The best results are obtained with PIndole-6-F6 for which superhydrophobic and highly oleophobic properties are reached due to the presence of spherical nanoparticles and low surface energy compounds.