A novel formation process of polyaniline micro-/nanofiber network on solid substrates

Chuanjun Liu, Kenshi Hayashi, Kiyoshi Toko

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

By a chemical oxidative polymerization of aniline on solid substrates treated with Au nanoparticles (Au-NPs) deposition and 4-aminothiophenol (ATP) modification, polyaniline (PANI) fibers were obtained in micro-/nanosize with two-dimensional network structures. The observation by laser scanning microscopy (LSM) indicated that the formation of PANI fibrous network occurred during the drying process rather than the polymerization. It was suggested the ATP modification on Au-NPs deposited substrate resulted in an inhomogeneous grafting of solution-formed PANI on the solid substrates, which self-aggregated to the fibrous network structure with the evaporation of water due to interchain interactions. The influence of polymerization conditions on the formation of fibrous network and the conducting property of the prepared film were discussed. Results from the gas sensing of the as-prepared PANI sensor upon exposure to NH3 confirmed that the sensitivity and responding rapidity was improved greatly by the PANI 2D fibrous network structure. Especially, a rapid response in resistance change on NH3 with low concentration indicated that the developed method in this work can be used to fabricate highly sensitive PANI gas sensors.

Original languageEnglish
Pages (from-to)1077-1081
Number of pages5
JournalSynthetic Metals
Volume159
Issue number11
DOIs
Publication statusPublished - Jun 1 2009

Fingerprint

Polyaniline
Nanofibers
Substrates
polymerization
Polymerization
nanoparticles
Nanoparticles
sensors
aniline
gases
drying
Aniline
low concentrations
Chemical sensors
polyaniline
evaporation
Drying
Microscopic examination
Evaporation
microscopy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

A novel formation process of polyaniline micro-/nanofiber network on solid substrates. / Liu, Chuanjun; Hayashi, Kenshi; Toko, Kiyoshi.

In: Synthetic Metals, Vol. 159, No. 11, 01.06.2009, p. 1077-1081.

Research output: Contribution to journalArticle

Liu, Chuanjun ; Hayashi, Kenshi ; Toko, Kiyoshi. / A novel formation process of polyaniline micro-/nanofiber network on solid substrates. In: Synthetic Metals. 2009 ; Vol. 159, No. 11. pp. 1077-1081.
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