Magnetic nanoparticle-based separation of metallic and semiconducting carbon nanotubes

Hyung Joon Kim, Sungsic Hwang, Jeseung Oh, Young Wook Chang, Eun Kyung Lim, Seungjoo Haam, Chul Sung Kim, Kyung Hwa Yoo

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4 Citations (Scopus)

Abstract

We report a simple and scalable method for the separation of semiconducting single-walled carbon nanotubes (SWNTs) from metallic SWNTs using magnetic nanoparticles (MNPs) functionalized with polycationic tri-aminated polysorbate 80 (TP80). MNPs-TP80 are selectively adsorbed on acid-treated semiconducting SWNTs, which makes the semiconducting SWNTs be highly concentrated to over 95% under a magnetic field. Almost all the field effect transistor network devices, which were fabricated using separated semiconducting SWNTs, exhibited a p-type semiconducting behavior with an on/off ratio of higher than 104.

Original languageEnglish
Article number045703
JournalNanotechnology
Volume22
Issue number4
DOIs
Publication statusPublished - 2011 Jan 28

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All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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