DNA functionalized carbon nanotubes as active stabilizers: Enhanced stability of conducting polymer composites

William Cheung, Ma Yufeng, Guangru Mao, Huixin He

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Short lifetime has been a thorny problem for chemical and biosensors, and light emitting devices consisting of organic (polymer) materials. In this work, a water-soluble self-doped polyaniline nanocomposite was fabricated by in-situ polymerization of 3-aminophenylboronic acid monomers in the presence of single-stranded DNA dispersed- and functionalized- single-walled carbon nanotubes. For the first time, we found that carbon nanotubes act as novel active stabilizers. This is possibly due to DNA functionalization: they reduced the polyaniline backbone from the unstable, degradable, fully oxidized pernigraniline state to the stable, conducting emeraldine state, which significantly improves the chemical stability of the self-doped polyaniline against the harsh UV irradiation.

Original languageEnglish (US)
Title of host publicationTechnical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
Pages144-147
Number of pages4
StatePublished - 2008
Event2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008 - Quebec City, QC, United States
Duration: Jun 1 2008Jun 5 2008

Publication series

NameTechnical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
Volume1

Other

Other2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008
CountryUnited States
CityQuebec City, QC
Period6/1/086/5/08

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Keywords

  • Carbon nanotubes
  • Composite
  • DNA
  • Self-doped polyaniline
  • Stability
  • UV irradiation

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