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Keywords:

  • flexible electronics;
  • graphene;
  • nanostructures;
  • photoluminescence;
  • thin films
Thumbnail image of graphical abstract

Blue photoluminescene (PL) from chemically derived graphene oxide has been observed. The PL is attributed to radiative recombination of electron–hole pairs in isolated “molecular” sp2 domains, which are present within the carbon–oxygen sp3 matrix in chemically derived graphene oxide. The PL intensity is correlated to the evolution of sp2 domains during reduction.