Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Positive Charge-doping on Carbon Nanotube Walls and Anion-directed Tunable Dispersion of the Derivatives

  • Shin, Ueon-Sang (Department of Nanobiomedical Science & WCU Research Center, Dankook University) ;
  • Knowles, Jonathan C. (Department of Nanobiomedical Science & WCU Research Center, Dankook University) ;
  • Kim, Hae-Won (Department of Nanobiomedical Science & WCU Research Center, Dankook University)
  • Received : 2010.10.09
  • Accepted : 2011.03.28
  • Published : 2011.05.20
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Abstract

An efficient and novel positive charge-doping on the sidewalls of multi-walled carbon nanotubes has been achieved in the presence of tetrahydrofuran as a dopant and Lewis acidic ionic liquids, [bmim]$Sb_nF_{5n+1}$ (n ${\geq}$ 2; bmim = 1-butyl-3-methylimidazolium), as an activator, leaving air-stable derivatives having positively charged sidewalls and the counter anions, [MWCNT$^{y+}$][SbF$_6^-$]$_y$ (MWCNT = multi-walled carbon nanotube). The derivatization took place very fast in one-pot and under mild reaction conditions. The ionic structure enabled a tunable dissolution of the derivatives in various solvents through anion exchange.

Keywords

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