Spontaneous coating of carbon nanotubes with an ultrathin polypyrrole layer

Martin Pumera, Břetislav Šmíd, Peng Xinsheng, Dmitri Golberg, Tang Jie, Izumi Ichinose

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)7644-7649
Number of pages6
JournalChemistry - A European Journal
Issue number27
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry


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