Abstract
Spiral dislocation morphology on the surface of cetyltrimethylammounium bromide (CTAB) crystallites has been discovered for the first time. By addition of ammonium peroxydisulfate into CTAB crystalline suspension, a drastic change in the morphology of result crystallites is observed from spiral to two dimensional (2D) islands. The spiral and 2D-island structures of these crystallites could be use as the templates for the synthesis of spiral and ring-like polypyrrole (PPy) nanowires, respectively, via direct chemical oxidative polymerization of pyrrole due to the oxidation reaction occurring preferentially at the steps of these crystallites. The mechanism of adsorption of pyrrole oligomers on the steps of these crystallites is proposed for the growth of PPy spiral and ring-like nanowires.
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Acknowledgements
This work was supported by the National Science Foundation of China (No. 50533020, 20774041, 20704022) and the Basic Research Program of China (2007CB925101).
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Wang, Y., Yu, C., Li, Z. et al. Synthesis of ordered spiral and ring-like polypyrrole nanowires in cetyltrimethylammounium bromide crystalline suspension. Colloid Polym Sci 287, 1325–1330 (2009). https://doi.org/10.1007/s00396-009-2093-1
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DOI: https://doi.org/10.1007/s00396-009-2093-1