The CME modified by azure I, a new electron-transfer mediator, which was electrodeposited onto the surface of spectrographic graphite electrode , shows significantly electrocatalytic activity to the reduction of hemoglobin. In the potential range from 0. 3 V to - 0.7 V(vs. SCE) , the mediator azure I behaves as one-electron reversible redox process involving two protons in acid solution and one proton in basic solution. In the medium of 0. 2 mol/L HAc-NaAc (pH = 5. 5). The formal potential E°′ of the electrodeposited azure I is - 0. 21 V and the apparent electron-transfer rate constant is 0. 69 s^-1. This CME shows a good stability.
Chemical Journal of Chinese Universities (Gaodeng Xuexiao Huaxue Xuebao),
Vol. 17, no. 12 (1996), pp. 1847-1850