Chiral nanotubes of polyaniline synthesized by a template-free method
Yang, YS; Wan, MX
AbstractChiral nanotubes of polyaniline (PANI) were successfully synthesized by a template-free method in the presence of (S)-(2)-2-pyrrolidone-5-carboxylic acid [(S)-PCA)] or (R)-(1)-2-pyrrolidone-5-carboxylic acid [(R)-PCA] as the dopant for the first time. The tubular morphologies of the resulting PANI-( S)-PCA and PANI-( R)-PCA were confirmed by SEM and TEM images. The tubes are 80-220 nm in outer diameter and 50-130 nm in inner diameter. It was proposed that the micelles of aniline-(S)-PCA or (R)-PCA, which were formed due to the hydrophobic aniline and the hydrophilic -COOH group of PCA, played a "template'' role during the formation of the chiral nanotubes. These chiral nanotubes showed optically active and electrical properties. In particular, a positive and a negative Cotton effect corresponding to a helical screw of the polymer main chains was observed in the chiral nanotubes. The structural characterization measured by FTIR and X-ray diffraction indicated that the configuration of PCA did not affect the main chains of the chiral nanotubes; however, short-range ordering at 2theta = 6.43 (d = 13.73 Angstrom) was significantly observed from the chiral nanotubes, which might result from the chiral character of the dopant.
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WOS IDWOS:000174550000017
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Cited Times:189[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWan, MX
AffiliationChinese Acad Sci, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China
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GB/T 7714
Yang, YS,Wan, MX. Chiral nanotubes of polyaniline synthesized by a template-free method[J]. JOURNAL OF MATERIALS CHEMISTRY,2002,12(4):897-901.
APA Yang, YS,&Wan, MX.(2002).Chiral nanotubes of polyaniline synthesized by a template-free method.JOURNAL OF MATERIALS CHEMISTRY,12(4),897-901.
MLA Yang, YS,et al."Chiral nanotubes of polyaniline synthesized by a template-free method".JOURNAL OF MATERIALS CHEMISTRY 12.4(2002):897-901.
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