Aqueous suspension of carbon nanotubes via non-covalent functionalization with oligothiophene-terminated poly(ethylene glycol)

Jea Uk Lee, June Huh, Keon Hyeong Kim, Cheolmin Park, Won Ho Jo

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

A new polymeric amphiphilic molecule for dispersing carbon nanotubes (CNTs) in water, oligothiophene-terminated poly(ethylene glycol) (TN-PEG), was synthesized and its ability to stabilize aqueous CNT dispersions was examined by UV-Vis spectroscopy and transmission electron microscopy. It was observed that the TN-PEGs were strongly adsorbed onto the nanotube surface via a strong π-π interaction, and thus only gentle sonication causes exfoliation of CNT ropes and bundles into well-separated individual objects and small bundles comprising 2-10 tubes. The dispersion ability of the TN-PEGs and the long-term stability of their resulting dispersions were much better than commercial surfactants.

Original languageEnglish
Pages (from-to)1051-1057
Number of pages7
JournalCarbon
Volume45
Issue number5
DOIs
Publication statusPublished - 2007 Apr 1

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Carbon Nanotubes
Polyethylene glycols
Carbon nanotubes
Suspensions
Dispersions
Sonication
Ultraviolet spectroscopy
Surface-Active Agents
Nanotubes
Surface active agents
Transmission electron microscopy
Molecules
Water

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Lee, Jea Uk ; Huh, June ; Kim, Keon Hyeong ; Park, Cheolmin ; Jo, Won Ho. / Aqueous suspension of carbon nanotubes via non-covalent functionalization with oligothiophene-terminated poly(ethylene glycol). In: Carbon. 2007 ; Vol. 45, No. 5. pp. 1051-1057.
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Aqueous suspension of carbon nanotubes via non-covalent functionalization with oligothiophene-terminated poly(ethylene glycol). / Lee, Jea Uk; Huh, June; Kim, Keon Hyeong; Park, Cheolmin; Jo, Won Ho.

In: Carbon, Vol. 45, No. 5, 01.04.2007, p. 1051-1057.

Research output: Contribution to journalArticle

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