Improved Bath Sonication Method for Dispersion of Individual Single-Walled Carbon Nanotubes Using New Triphenylene-Based Surfactant

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概要

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• We developed a new surfactant for the dispersion of single-walled carbon nanotubes (SWNTs). The surfactant is an amphiphilic compound with a $\pi$-conjugative triphenylene skeleton. SWNTs were individually dispersed by the aid of the surfactant using a common low-power bath sonicator. Well-dispersed HiPco SWNTs in D2O solution were obtained using the surfactant by the repetition of surfactant addition and sonication, followed by overnight sonication. Spectroscopic measurements of the dispersed solution revealed that the SWNTs were dispersed sufficiently to show clear photoluminescence (PL) without ultracentrifugation. Moreover, this method was applied to the dispersion of SWNTs using a typical surfactant, sodium dodecylbenzene sulfate (SDBS). The observed clear PL from SWNTs in the solution obtained without ultracentrifugation suggested that gradual surfactant addition and sonication, followed by overnight sonication, strongly contributed to the efficient dispersion of SWNTs in water.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2008-04-25

著者

• Miyauchi Yuhei

  Department Of Mechanical Engineering The University Of Tokyo

• Kato Masaru

  Center For Nanobio Integration The University Of Tokyo

• Motoyanagi Jin

  Erato-sorst Aida Nanospace Project Japan Science And Technology Agency National Museum Of Emerging S

• Yamamoto Tatsuhiro

  Center For Nanobio Integration The University Of Tokyo

• Maruyama Shigeo

  Department Of Internal Medicine Gotsu General Hospital

• Fukushima Takanori

  Center for NanoBio Integration, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• Aida Takuzo

  Center for NanoBio Integration, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• Maruyama Shigeo

  Department of Mechanical Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• Miyauchi Yuhei

  Department of Mechanical Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

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