Large-scale separation of metallic and semiconducting single-walled carbon nanotubes

Yutaka Maeda, Shin Ichi Kimura, Makoto Kanda, Yuya Hirashima, Tadashi Hasegawa, Takatsugu Wakahara, Yongfu Lian, Tsukasa Nakahodo, Takahiro Tsuchiya, Takeshi Akasaka, Jing Lu, Xinwei Zhang, Zhengxiang Gao, Yapeng Yu, Shigeru Nagase, Said Kazaoui, Nobutsugu Minam, Tetsuo Shimizu, Hiroshi Tokumoto, Riichiro Saito

Research output: Contribution to journalArticlepeer-review

315 Citations (Scopus)


In the applications of single-walled carbon nanotubes (SWNTs), it is extremely important to separate semiconducting and metallic SWNTs. Although several methods have been reported for the separation, only low yields have been achieved at great expense. We show a separation method involving a dispersion-centrifugation process in a tetrahydrofuran solution of amine, which makes metallic SWNTs highly concentrated to 87% in a simple way.

Original languageEnglish
Pages (from-to)10287-10290
Number of pages4
JournalJournal of the American Chemical Society
Issue number29
Publication statusPublished - 2005 Jul 27

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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