| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1417175 | Carbon | 2007 | 7 Pages |
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.
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Authors
Jea Uk Lee, June Huh, Keon Hyeong Kim, Cheolmin Park, Won Ho Jo,