Fine-tuning in size and surface morphology of rod-shaped polypyrrole using porous silicon as template |
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Affiliation: | 1. Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan;2. Advanced Materials Technology Department, Central Metallurgical R&D Institute, Cairo 11421, Egypt;3. Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan |
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Abstract: | We investigated electropolymerization of polypyrrole into porous silicon template. We used three types of porous silicon templates, i.e., porous silicon with ordered macro pores, medium-sized pores and meso pores. Polypyrrole was electropolymerized from pore bottoms to pore tops in all the porous silicon templates. After removal of the templates we obtained rod-shaped polypyrrole arrays. Changing the porous silicon templates easily controlled the size of the rod-shaped polypyrrole. We also used dendritic medium-sized pores for template, and then polypyrrole rod having a roughened surface was obtained. Here we demonstrated that the size and the surface morphology of polypyrrole rod were easily tuned using porous silicon. |
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