Review Article
Nanocomposites of Graphene with Ferrocene or Hemin: Preparation and Application in Electrochemical Sensing
Figure 2
(a) Magnetically driven fuel-free graphene carrier with loading of redox-active cargo-Fc working as an electron mediator for mediated bioelectrocatalysis of glucose to gluconic acid by GOx switched between “on” and “off” states under alternate positioning of the graphene carrier with loaded Fc (i) near and (ii) away from the conductive support. (b) The loading of Fc onto the graphene carrier by interaction between Py–CHO and the unoccupied areas of the graphene nanosheet, followed by the formation of imine bond (–C=N–) between –CHO group of the Py–CHO modified graphene carrier and the –NH2 group of the Fc–NH2. (Reprinted with permission from [34]. Copyright 2014 John Wiley and Sons).
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