Helicity-selective photoreaction of single-walled carbon nanotubes with organosulfur compounds in the presence of oxygen

Yutaka Maeda, Junki Higo, Yuri Amagai, Jun Matsui, Kei Ohkubo, Yusuke Yoshigoe, Masahiro Hashimoto, Kazuhiro Eguchi, Michio Yamada, Tadashi Hasegawa, Yoshinori Sato, Jing Zhou, Jing Lu, Tokuji Miyashita, Shunichi Fukuzumi, Tatsuya Murakami, Kazuyuki Tohji, Shigeru Nagase, Takeshi Akasaka

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


This report describes a helicity-selective photoreaction of single-walled carbon nanotubes (SWNTs) with disulfide in the presence of oxygen. The SWNTs were characterized using absorption, photoluminescence (PL), Raman, and X-ray photoelectron spectroscopy, scanning electron microscopy, and current-voltage (I-V) measurements. Results showed remarkable helicity-selective (metallic SWNTs/semiconducting SWNTs and diameter) functionalization of SWNTs. The reaction rate decreases in the order of metallic SWNTs > semiconducting SWNTs and small-diameter SWNTs > large-diameter SWNTs. Control experiments conducted under various experimental conditions and ESR and femtosecond laser flash photolysis measurements revealed that the helicity-selective reaction proceeds via a photoinduced electron transfer reaction. The PL and I-V measurements showed that the photoreaction is effective not only to control SWNT conductivity but also for the band gap modulation of semiconducting SWNTs.

Original languageEnglish
Pages (from-to)6356-6362
Number of pages7
JournalJournal of the American Chemical Society
Issue number16
Publication statusPublished - 2013 Apr 24

ASJC Scopus subject areas

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


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