Effect of electrolyte concentration and nature on the morphology and the electrical properties of electropolymerized polypyrrole nanotubules
Effect of electrolyte concentration and nature on the morphology and the electrical properties of electropolymerized polypyrrole nanotubules
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DOI：
10.1021/cm9807541
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发表时间：
1999-03-01
影响因子：
8.6
通讯作者：
Stavaux, PY
中科院分区：
文献类型：
--
作者：
Demoustier-Champagne, S;Stavaux, PY
在自制的不同孔径的聚碳酸酯粒子径迹刻蚀膜中，电化学合成了具有4种不同反离子的聚吡咯（PPy）。已经观察到PPy生长速率对孔径和电解质性质和浓度的依赖性。不同的模板合成的纳米结构的形态进行了仔细分析，通过场发射扫描电子显微镜。在所有情况下，观察到纳米管。然而，它们的厚度取决于模板膜的孔径和支持电解质的性质。已知这种结构中PPy的电导率与体电导率相比增加，这也在这里示出。此外，拉曼光谱表明，相对共轭长度随孔径的减小而增加。
Polypyrrole (PPy) with four different counterions was electrochemically synthesized in homemade polycarbonate particle track-etched membranes with different pore sizes. A dependence of the PPy growing rate on the pore size and on the electrolyte nature and concentration has been observed. The morphology of the different template-synthesized nanostructures has been carefully analyzed by field-emission scanning electron microscopy. In all cases, nanotubules were observed. However, their thickness depends on the pore diameter of the template membrane and on the nature of the supporting electrolyte. The electrical conductivity of PPy in such a structure is known to increase compared to the bulk conductivity, which is also shown here. In addition Raman spectroscopy showed that the relative conjugation length increases with decreasing pore size.