Microtubules of polypyrrole synthesized by an electrochemical template-free method
Yang, YS; Wan, MX
AbstractMicrotubules of polypyrrole (PPy) were synthesized by an electrochemical template-free method in the presence of beta -naphthalenesulfonic acid (beta -NSA) as a dopant for the first time. The influence of electrochemical polymerization conditions, such as material of the working electrode, the concentration of beta -NSA and pyrrole monomer, current density and polymerization time on the tubular morphology of PPy-NSA was systematically investigated. PPy-NSA tubules 0.8-2.0 mum in diameter and 15.0-30.0 mum in length were obtained when a non-corrosive steel plate was used as the working electrode, and the size of the tubules was affected by other polymerization conditions. The molecular structure of the tubules was characterized by FTIR and X-ray diffraction, indicating that their polymer chains are similar to granular PPy synthesized by other chemical or electrochemical methods, and the tubules were amorphous. The conductivity of the tubules at room temperature was found to be about 5.0 S cm(-1) and the temperature dependence of the conductivity followed a two-dimensional Variable Range Hopping (2D-VRH) model. It was proposed that the absorbed micelles of beta -NSA, which result from the surfactant characteristics of beta -NSA dopant on the working electrode, act like templates in forming PPy-NSA tubules by this new method.
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WOS IDWOS:000169940000013
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Cited Times:78[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWan, MX
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Organ Solid Lab, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Yang, YS,Wan, MX. Microtubules of polypyrrole synthesized by an electrochemical template-free method[J]. JOURNAL OF MATERIALS CHEMISTRY,2001,11(8):2022-2027.
APA Yang, YS,&Wan, MX.(2001).Microtubules of polypyrrole synthesized by an electrochemical template-free method.JOURNAL OF MATERIALS CHEMISTRY,11(8),2022-2027.
MLA Yang, YS,et al."Microtubules of polypyrrole synthesized by an electrochemical template-free method".JOURNAL OF MATERIALS CHEMISTRY 11.8(2001):2022-2027.
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