Separation of metallic SWNTs and semiconducting SWNTs

Yasuhiko Tomonari, Masataka Hiwatashi, Hiroto Murakami, Shohei Toyoda, Naotoshi Nakashima

    Research output: Contribution to conferencePaperpeer-review


    Very recently, considerable attention has been focused on the separation of metallic SWNTs and semiconducting SWNTs. The combination of the chemical modification and physical adsorption on SWNTs has reported to be quite useful for the separation. Strano et al. reported an interesting method to separate metallic and semiconducting SWNTs. The separation is based on the difference in the reaction rates of 4-chlorobenzenediazonium tetrafluoroborate toword metallic-SWNTs and semiconducting SWNTs that are dissolved individually in an aqueous micelle of sodium dodecylsulfate. That is, under controlled conditions, tetrafluoroborate reacts with metallic-SWNTs selectively and by a thermal treatment of the reacted SWNTs, the pristine electronic structure of the nanotubes restored. We have modified their methods. That is, we designed and synthesized a double-chain benzenediazonium tetrafluoroborate, 1. We describe here the separation of metallic SWNTs and semiconducting SWNTs using compound 1.

    Original languageEnglish
    Number of pages1
    Publication statusPublished - 2005
    Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
    Duration: May 25 2005May 27 2005


    Other54th SPSJ Annual Meeting 2005

    All Science Journal Classification (ASJC) codes

    • Engineering(all)


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