Self-selective separation of single-walled carbon nanotubes via a hydroxyl group reaction

Kon Yi Heo; Keun Woo Lee; Kyung Min Kim; Hyun Jae Kim

doi:10.1149/1.3236389

Self-selective separation of single-walled carbon nanotubes via a hydroxyl group reaction

Kon Yi Heo, Keun Woo Lee, Kyung Min Kim, Hyun Jae Kim

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We developed a method of separating metallic single-walled carbon nanotubes (SWNTs) from semiconducting nanotubes (NTs) in suspension using a sodium hydroxide treatment and centrifugation. The semiconducting NTs remained suspended in the solvent while the metallic NTs precipitated out. This self-selective separation occurred because the metallic SWNTs bonded to hydroxyl groups due to strong surface hydrogen-bond interactions. We fabricated thin-film transistors based on random networks of semiconducting SWNTs on a glass substrate and obtained an on/off current ratio of 6.25 × 10 ⁴.

Original language	English
Pages (from-to)	K71-K73
Journal	Electrochemical and Solid-State Letters
Volume	12
Issue number	12
DOIs	https://doi.org/10.1149/1.3236389
Publication status	Published - 2009

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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10.1149/1.3236389

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abstract = "We developed a method of separating metallic single-walled carbon nanotubes (SWNTs) from semiconducting nanotubes (NTs) in suspension using a sodium hydroxide treatment and centrifugation. The semiconducting NTs remained suspended in the solvent while the metallic NTs precipitated out. This self-selective separation occurred because the metallic SWNTs bonded to hydroxyl groups due to strong surface hydrogen-bond interactions. We fabricated thin-film transistors based on random networks of semiconducting SWNTs on a glass substrate and obtained an on/off current ratio of 6.25 × 10 4.",

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AU - Heo, Kon Yi

AU - Lee, Keun Woo

AU - Kim, Kyung Min

AU - Kim, Hyun Jae

PY - 2009

Y1 - 2009

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AB - We developed a method of separating metallic single-walled carbon nanotubes (SWNTs) from semiconducting nanotubes (NTs) in suspension using a sodium hydroxide treatment and centrifugation. The semiconducting NTs remained suspended in the solvent while the metallic NTs precipitated out. This self-selective separation occurred because the metallic SWNTs bonded to hydroxyl groups due to strong surface hydrogen-bond interactions. We fabricated thin-film transistors based on random networks of semiconducting SWNTs on a glass substrate and obtained an on/off current ratio of 6.25 × 10 4.

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JF - Electrochemical and Solid-State Letters

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ER -

Self-selective separation of single-walled carbon nanotubes via a hydroxyl group reaction

Abstract

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