Electrochemical Behaviour of HOPG and CVD‐Grown Graphene Electrodes Modified with Thick Anthraquinone Films by Diazonium Reduction

  title={Electrochemical Behaviour of HOPG and CVD‐Grown Graphene Electrodes Modified with Thick Anthraquinone Films by Diazonium Reduction},
  author={Elo Kibena and Margus Marandi and V{\"a}ino Sammelselg and Kaido Tammeveski and Bjarke B. E. Jensen and Anders B. Mortensen and Mie Lillethorup and Mikkel S Kongsfelt and Steen Uttrup Pedersen and Kim Daasbjerg},
Highly oriented pyrolytic graphite (HOPG) and graphene grown on Ni (Ni-Gra) or Cu (Cu-Gra) by chemical vapour deposition were modified with thick anthraquinone (AQ) films (7−60 nm) by redox grafting of the pertinent diazonium salt. Glassy carbon (GC) electrodes were used for comparison. The AQ-modified GC electrodes showed excellent blocking properties towards the Fe(CN)63−/4− redox probe, although it was noted that in the case of Ni-Gra and Cu-Gra, the blocking ability depended strongly on the… 
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