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

33 Scopus citations

Abstract

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
Volume135
Issue number16
DOIs
StatePublished - 24 Apr 2013

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