Nanostructured Polyaniline Sensors

Jiaxing Huang, Shabnam Virji, Bruce H. Weiller*, Richard B. Kaner

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

512 Scopus citations


The conjugated polymer polyaniline is a promising material for sensors, since its conductivity is highly sensitive to chemical vapors. Nanofibers of polyaniline are found to have superior performance relative to conventional materials due to their much greater exposed surface area. A template-free chemical synthesis is described that produces uniform polyaniline nanofibers with diameters below 100 nm. The interfacial polymerization can be readily scaled to make gram quantities. Resistive-type sensors made from undoped or doped polyaniline nanofibers outperform conventional polyaniline on exposure to acid or base vapors, respectively. The nanofibers show essentially no thickness dependence to their sensitivity.

Original languageEnglish (US)
Pages (from-to)1314-1319
Number of pages6
JournalChemistry - A European Journal
Issue number6
StatePublished - Apr 19 2004


  • Interfaces
  • Nanostructures
  • Polyaniline
  • Sensors
  • Thin films

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry


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