Abstract
We report here a novel approach to the template-assisted electrochemical synthesis of vertically aligned polyaniline (PANI) nanostructure surface arrays. When PANI is obtained by electropolymerization inside a custom-made anodic aluminum oxide (AAO) template, with an Au layer sputtered onto one side of the AAO acting as an anode, PANI nanotubes are obtained. In contrast, when the surface of this gold layer is modified with 4-aminothiophenol (4-ATP) as a self-assembled monolayer (SAM) film anchored to the gold layer via the thiol groups and on the opposite end having NH2 functionalities, we obtain a surface array of PANI nanowires. Cyclic voltammetry and SEM analysis show that the amino functionalities of Au/SAMs act as a nucleation site in the internal base of the AAO pore and determine both the morphology and structure of polyaniline and its electronic properties as well.
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Acknowledgments
FONDECYT Grants 1131062, 1140192 and Milllenium Nucleus of Molecular Engineering for Catalysis and Biosensors RC120001 supported this work. CPS and MS-N are thankful to CONICYT for a doctoral fellowship.
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Silva, C.P., Santander-Nelli, M., Vera-Oyarce, C. et al. Polyaniline nanostructure electrode: morphological control by a hybrid template. J Solid State Electrochem 20, 1175–1180 (2016). https://doi.org/10.1007/s10008-015-2944-2
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DOI: https://doi.org/10.1007/s10008-015-2944-2