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

doi:10.1016/j.carbon.2006.12.017

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 journal › Article › peer-review

103 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 language	English
Pages (from-to)	1051-1057
Number of pages	7
Journal	Carbon
Volume	45
Issue number	5
DOIs	https://doi.org/10.1016/j.carbon.2006.12.017
Publication status	Published - 2007 Apr
Externally published	Yes

Bibliographical note

Funding Information:
The authors thank the Korea Science and Engineering Foundation (KOSEF) for financial support through the Hyperstructured Organic Materials Research Center (HOMRC).

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)

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10.1016/j.carbon.2006.12.017

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

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.",

author = "Lee, {Jea Uk} and June Huh and Kim, {Keon Hyeong} and Cheolmin Park and Jo, {Won Ho}",

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AU - Lee, Jea Uk

AU - Huh, June

AU - Kim, Keon Hyeong

AU - Park, Cheolmin

AU - Jo, Won Ho

N1 - Funding Information: The authors thank the Korea Science and Engineering Foundation (KOSEF) for financial support through the Hyperstructured Organic Materials Research Center (HOMRC).

PY - 2007/4

Y1 - 2007/4

N2 - 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.

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

Abstract

Bibliographical note

ASJC Scopus subject areas

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