Selective attachment of gold nanoparticles to nitrogen-doped carbon nanotubes

Kuiyang Jiang, Ami Eitan, Linda S. Schadler, Pulickel M. Ajayan, Richard W. Siegel, Nicole Grobert, Martine Mayne, Marisol Reyes-Reyes, Humberto Terrones, Mauricio Terrones

Research output: Contribution to journalArticlepeer-review

511 Scopus citations

Abstract

Gold nanoparticles were selectively attached to chemically functionalized surface sites on nitrogen-doped carbon (CNx) nanotubes. A cationic polyelectrolyte was adsorbed on the surface of the nanotubes by electrostatic interaction between carboxyl groups on the chemically oxidized nanotube surface and polyelectrolyte chains. Negatively charged 10 nm gold nanoparticles from a gold colloid suspension were subsequently anchored to the surface of the nanotubes through the electrostatic interaction between the polyelectrolyte and the nanoparticles. This approach provides an efficient method to attach other nanostructures to carbon nanotubes and can be used as an illustrative detection of the functional groups on carbon nanotube surfaces.

Original languageEnglish (US)
Pages (from-to)275-277
Number of pages3
JournalNano letters
Volume3
Issue number3
DOIs
StatePublished - Mar 1 2003

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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