Polyaniline stabilized highly dispersed gold nanoparticle: An in-situ chemical synthesis route

Kaushik Mallick, Mike J. Witcomb, Mike S. Scurrell

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


The in-situ chemical synthesis of polyaniline stabilized highly dispersed gold nanoparticle, was studied. HAuCl4 stock solution was added to a solution of aniline dissolved in methanol. The solution became turbid and viscous and the sample was collected for TEM and UV-vis spectroscopic analysis. The solution was dried under vacuum and the resulting solid mass was characterized using IR and Raman spectroscopy. The mechanism suggested was that H+ ion from HAuCl4 leads to the formation of PhNH 3+ type species. [AuCl4]- acts as the oxidizing agent and is capable of oxidizing PhNH3+. The resultant oxidative product is polyaniline and during polymerization each step involved the release of electrons that reduce the gold ion to form gold atoms. It was found that the morphology of the metal-polymer composite could be influenced by the synthesis conditions employed.

Original languageEnglish
Pages (from-to)6189-6192
Number of pages4
JournalJournal of Materials Science
Issue number18
Publication statusPublished - Aug 2006
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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