Spontaneous high-concentration dispersions and liquid crystals of graphene

We show that graphite spontaneously exfoliates into single-layer graphene in chlorosulphonic acid, and dissolves at isotropic concentrations as high as ∼2 mg ml−1, which is an order of magnitude higher than previously reported values

Natnael Behabtu; Jay R. Lomeda; Micah J. Green; Amanda L. Higginbotham; Alexander Sinitskii; Dmitry V. Kosynkin; Dmitri Tsentalovich; A. Nicholas G. Parra-Vasquez; Judith Schmidt; Ellina Kesselman; Yachin Cohen; Yeshayahu Talmon; James M. Tour; Matteo Pasquali

2010

Scholarcy highlights

  • We show that graphite spontaneously exfoliates into single-layer graphene in chlorosulphonic acid, and dissolves at isotropic concentrations as high as ∼2 mg ml−1, which is an order of magnitude higher than previously reported values
  • We report spontaneous formation of liquid-crystalline phases at high concentrations
  • Cryo-TEM was performed at the Electron Microscopy of Soft Matter Laboratory, supported by the Technion Russell Berrie Nanotechnology Institute
  • M.P., Y.T., Y.C. and J.M.T. supervised the project

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