Highly Oxidized Graphene Quantum Dots from Coal as Efficient Antioxidants

Lizanne Nilewski, Kimberly Mendoza, Almaz S. Jalilov, Vladimir Berka, Gang Wu, William K.A. Sikkema, Andrew Metzger, Ruquan Ye, Rui Zhang, Duy Xuan Luong, Tuo Wang, Emily McHugh, Paul J. Derry, Errol Loïc Samuel, Thomas A. Kent, Ah Lim Tsai, James M. Tour

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


Graphene quantum dots (GQDs) have recently been employed in various fields including medicine as antioxidants, primarily because of favorable biocompatibility in comparison to common inorganic quantum dots, although the structural features that lead to the biological activities of GQDs are poorly understood. Here, we report that coal-derived GQDs and their poly(ethylene glycol)-functionalized derivatives serve as efficient antioxidants, and we evaluate their electrochemical, chemical, and in vitro biological activities.

Original languageEnglish (US)
Pages (from-to)16815-16821
Number of pages7
JournalACS Applied Materials and Interfaces
Issue number18
StatePublished - May 8 2019


  • antioxidant
  • carbon nanotechnology
  • coal
  • graphene quantum dots
  • superoxide dismutase

ASJC Scopus subject areas

  • Materials Science(all)


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