期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 13, 期 27, 页码 7644-7649出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200700211
关键词
coating; materials; science; nanotubes; polymers; polypyrrole
A novel protocol for precisely coating individual multiwall carbon nanotubes (MWCNTs) with an ultrathin layer of polypyrrole was developed. The nanocoated MWCNTs were successfully prepared by in situ chemical deposition of polypyrrole in an aqueous suspension of MWCNTs. The coating layer was very uniform and the thickness of the layer was determined by controlling the monomer concentration used, which gave nanometer precision. The products were characterized by transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, electron energy loss spectroscopy, and conductivity and current-voltage measurements. The ultrathin polypyrrole layer could electrically insulate individual MWCNTs.
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