Structure orientation of hemin self-assembly layer determining the direct electron transfer reaction

Abstract

We propose a strategy to control directly the orientation of hemin plane via experimental models, Hemin–His model and Hemin–MHN model with ODT. Electrochemical results show that electron communication is largely enhanced when the hemin plane is near to parallel to the electrode surface by histidine ligation in Hemin–His model, while the electron transport of hemin in Hemin–MHN model with ODT becomes relatively difficult.