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Keywords:

  • graphene;
  • self-assembly;
  • nanostructures;
  • graphene oxide;
  • thin films
Thumbnail image of graphical abstract

Adjacent graphene oxide nanosheets in a thin-film structure have been covalently cross-linked in a fashion similar to the cell walls of higher-order plants. The resulting ultra-stiff structure exhibits a maximum storage modulus of 127 GPa that can be tuned by varying borate concentration.