Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets

Sasha Stankovich, Richard D. Piner, Son Binh T. Nguyen*, Rodney S. Ruoff

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2096 Scopus citations


A number of functionalized graphite oxides were prepared by treatment of graphite oxide (GO) with organic isocyanates. These isocyanate-treated GOs (iGOs) can then be exfoliated into functionalized graphene oxide nanoplatelets that can form a stable dispersion in polar aprotic solvents. Characterization of iGOs by FT-IR spectroscopy and elemental analysis suggested that the isocyanate treatment results in the functionalization of the carboxyl and hydroxyl groups in GO via formation of amides and carbamate esters, respectively. The degree of GO functionalization can be controlled via either the reactivity of the isocyanate or the reaction time. When used with functionalized isocyanates, the described methodology allows for the elaboration of graphene oxide nanoplatelets with different surface functional groups.

Original languageEnglish (US)
Pages (from-to)3342-3347
Number of pages6
Issue number15
StatePublished - Dec 2006


  • Atomic force microscopy
  • Chemical treatment
  • Graphite oxide
  • Infrared spectroscopy
  • Surface properties

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)


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