Université de Nice-Sophia Antipolis, Laboratoire de Chimie des Matériaux Organiques et Métalliques, Equipe Chimie Organique aux Interfaces, Parc Valrose, 06108 Nice Cedex 2, France.
Langmuir. 2010 Nov 16;26(22):17596-602. doi: 10.1021/la103310m. Epub 2010 Sep 29.
To elaborate on superhydrophobic surfaces, we report the electrochemical synthesis, surface morphology, and wettability of hydrocarbon conductive polymer films obtained by the electrodeposition of polythiophene, poly(3,4-ethylenedioxythiophene) (i.e., PEDOT), and poly(3,4-ethylenedioxypyrrole) (i.e., PEDOP) derivatives. Highly hydrophobic films were obtained from n-C(14)H(29) and n-C(8)H(17) chains in the cases of polythiophenes and PEDOP, respectively. By contrast, superhydrophobic films were formed by the deposition of PEDOT substituted with n-C(10)H(21) chains (PEDOT-methyl undecanoate): static contact angle ≈ 160.6°, hysteresis ≈ 2°, and sliding angle ≈ 3°. Their surface properties were compared to those of previously reported fluorinated analogues. The water-repellent properties of PEDOT-methyl undecanoate were similar to the best surface properties obtained with fluorinated monomers. Even if the main approach for the chemical factor to build up superhydrophobic surfaces is via a coating of a fluorinated compound, this work confirms that the formation of fractal surfaces is able to achieve super-anti-wetting properties within a hydrocarbon series (less expensive with a favorable ecotoxic approach), and it opens a new path to bioinspired surfaces.
为了详细说明超疏水表面，我们报告了通过电化学沉积聚噻吩、聚（3,4-亚乙基二氧噻吩）（即 PEDOT）和聚（3,4-亚乙基二氧吡咯）（即 PEDOP）衍生物获得的烃类导电聚合物薄膜的电化学合成、表面形态和润湿性。在聚噻吩和 PEDOP 的情况下，分别从 n-C(14)H(29)和 n-C(8)H(17)链获得了高度疏水的薄膜。相比之下，通过沉积用 n-C(10)H(21)链（PEDOT-甲基十一烷酸酯）取代的 PEDOT 形成了超疏水薄膜：静态接触角≈160.6°，滞后≈2°，滑动角≈3°。将它们的表面性能与以前报道的氟化类似物进行了比较。PEDOT-甲基十一烷酸酯的疏水性与用氟化单体获得的最佳表面性能相似。即使构建超疏水表面的化学因素的主要方法是涂覆氟化化合物，但这项工作证实，在烃系列中形成分形表面能够实现超抗湿性（用有利的生态毒性方法更便宜），并为仿生表面开辟了新途径。
