Abstract
Aligned micro-ribbons of N-chiral alkyl substituted polypyrrole have been grown for the first time by electrochemical polymerization of methyl (S)-(+)-2-(1H-pyrrol-yl) propionate (1) and methyl (S)-(−)-3-phenyl-2-(1H-pyrrol-yl) propionate (2) in acetonitrile containing tetrabutylammonium perchlorate (TBAClO4) and camphor-10-sulfonic acid (CSA) enantiomer. The micro-ribbons stand upright on the working electrode surface in a high density. They have a length of 100–200 μm, a width of 20–50 μm and a thickness of 3–5 μm. Scanning electron microscopic (SEM) studies showed that the micro-ribbons were assembled by nanometer balls with diameters of 30–50 nm. A hole growing mechanism was suggested according to the SEM pictures recorded during the electrochemical growth process. The structures of the resulting polymers have been characterized by infrared and Raman spectroscopies.
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Han, G., Shi, G., Yuan, J. et al. Electrochemical growth of aligned N-chiral alkyl substituted polypyrrole micro-ribbons. Journal of Materials Science 39, 4451–4457 (2004). https://doi.org/10.1023/B:JMSC.0000034137.82383.47
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DOI: https://doi.org/10.1023/B:JMSC.0000034137.82383.47