Electrochemical polymerization of pyrrole in supercritical carbon dioxide-in-water emulsion
Electrochemical polymerization of pyrrole in supercritical carbon dioxide-in-water emulsion
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DOI：
10.1016/j.polymer.2006.01.016
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发表时间：
2006-02
期刊：
影响因子：
4.6
通讯作者：
M. Jikei;Suguru Saitoh;H. Yasuda;H. Itoh;M. Sone;M. Kakimoto;H. Yoshida
中科院分区：
文献类型：
--
作者：
M. Jikei;Suguru Saitoh;H. Yasuda;H. Itoh;M. Sone;M. Kakimoto;H. Yoshida
超临界二氧化碳是一种环境友好的溶剂，但其低极性限制了电化学反应的进行。在Pt电极上形成黑色聚吡咯膜，其导电性与在常规溶剂中制备的无取向聚吡咯相当。通过红外光谱和拉曼光谱测试证实了聚吡咯薄膜的结构。对甲苯磺酸是一个合适的支持电解质中的电解质检查的电化学聚合中的C/W乳液。通过扫描电子显微镜和原子力显微镜的测量，观察到了典型的结节形态。共聚焦扫描显微镜显示在C/W乳液中制备的膜上形成精细的不均匀纹理。
Supercritical carbon dioxide is an environmentally benign solvent but its low polarity limits electrochemical reactions in it. We now report the electrochemical polymerization of pyrrole in a supercritical carbon dioxide-in-water (C/W) emulsion in the presence of a surfactant. Black polypyrrole films were formed on Pt electrodes, whose conductivity was comparable with non-oriented polypyrrole prepared in conventional solvents. The structure of the polypyrrole films was confirmed by IR and Raman spectroscopic measurements. p-Toluenesulfonic acid was a suitable supporting electrolyte among the electrolytes examined for the electrochemical polymerization in the C/W emulsion. A typical nodular morphology was observed on the basis of the SEM and AFM measurements. Confocal scanning microscope revealed the formation of a fine uneven texture on the film prepared in the C/W emulsion.