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首页> 外文期刊>ACS applied materials & interfaces >Micro/Nano-Structured Polypyrrole Surfaces on Oxidizable Metals as Smart Electroswitchable Coatings
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Micro/Nano-Structured Polypyrrole Surfaces on Oxidizable Metals as Smart Electroswitchable Coatings

机译：可氧化金属上的微/纳米结构聚吡咯表面作为智能电开关涂料

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摘要

Polypyrrole (PPy) films were electrodeposited from a pyrrole/sodium salicylate solution in water, through two-dimensional (2-D) polystyrene (PS) templates self-assembled on various oxidizable metals, after which the template was removed by dissolution in tetrahydrofuran (THF). The resulting PPy films were analyzed by scanning electron microscopy and atomic force microscopy. Two-dimensional PPy honeycomb structures are obtained on copper or mild steel by using PS spheres of various sizes. The morphology of these structures was controlled electrochemically, as an increase in the polymerization charge does not disturb the PPy honeycomb arrangement, leading instead to the formation of deeper pores accompanied by a change in their diameter. The hydrophobicity of the reduced micro-structured PPy surface is much greater than that of a bulk PPy film generated on the same metal. Reversible electro-switching of the wettability was obtained with marked variation of the apparent contact angle upori"PPy oxido-reduction, and an important effect of film micro-structuration upon the wettability range.
机译：通过自组装在各种可氧化金属上的二维（2-D）聚苯乙烯（PS）模板，从吡咯/水杨酸钠水溶液中电沉积聚吡咯（PPy）膜，然后通过溶于四氢呋喃（ THF）。通过扫描电子显微镜和原子力显微镜分析所得的PPy膜。通过使用各种尺寸的PS球，可以在铜或低碳钢上获得二维PPy蜂窝结构。这些结构的形态是电化学控制的，因为聚合电荷的增加不会干扰PPy蜂窝状排列，而是导致形成更深的孔，并伴随其直径的变化。还原的微结构化PPy表面的疏水性远大于在相同金属上产生的块状PPy膜的疏水性。润湿性的可逆电开关是通过表观接触角上的PPy氧化还原的显着变化获得的，并且膜微结构化对润湿性范围具有重要影响。

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