Effects of selective polymerization conditions on physical properties of nanometer-scale silica/polypyrrole composites

Yongju Jung, Seok Kim, Ryan L. Spray, Hye Jeong Yang, Seong Hyo Park, Seokhyeon Kim, Hochun Lee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Nanometer-scale (approximately 70 nm) silica/polypyrrole composites were synthesized using a selective polymerization based on an in situ-generated strong oxidizing agent (NO+ ions) on the silica surface. The effects of the concentrations of reactants (pyrrole monomer and NO2- ions) and the presence of additional dopant anions (Cl- or SO2-4) on the polypyrrole (ppy) content and electric conductivity of the silica/ppy composites are examined. It was found that the ppy content in the silica/ppy composites increased with the reactant concentration in the range of 0.02-0.2 M. It is revealed that employing additional dopant anions could be a promising way to improve the electrical conductivity of the composites.

Original languageEnglish
Pages (from-to)2881-2884
Number of pages4
JournalBulletin of the Korean Chemical Society
Volume36
Issue number12
DOIs
StatePublished - 1 Dec 2015

Bibliographical note

Publisher Copyright:
© 2015 Korean Chemical Society, Seoul & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords

  • Electrical conductivity
  • Polypyrrole
  • Selective polymerization
  • Silica

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