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Electrical conductivity of individual polypyrrole microtube |
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| Authors: | Long Yun-Ze Xiao Hong-Mei Chen Zhao-Ji Wan Mei-Xiang Jin Ai-Zi and Gu Chang-Zhi |
| Institution: | Key Laboratory of Extreme Conditions Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; Laboratory of Organic Solids, Centre for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; Laboratory of Microfabrication, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
| Abstract: | Conducting microtubes (0.4－0.5μm in outer diameter) made of polypyrrole (PPy) doped with p-toluene sulfonic acid (PTSA) were synthesized by a self-assembly method. We report the electrical conductivity of an individual PPy microtube, on which a pair of platinum micro-leads was fabricated by focused ion beam deposition. The measured room-temperature conductivity of the individual PPy microtube was 0.29S/cm, which is comparable to that of template-synthesized PPy micro/nanotubes. The temperature dependence of conductivity of the individual microtube follows the three-dimensional variable-range hopping (3D VRH) model. |
| Keywords: | conducting polymers microtubes self-assembly conductivity polypyrrole |
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