In 1998, Shi and Anson applied a related but less complex approach by coating a thin layer of an organic solvent on the electrode surface to examine the electron transfer process between the thin layer and the adjacent aqueous solution. This method overcomes the effect from IR drop efficiently and it is anew approach that is prompt, simple and costless. Based on the experiments, they drew some conclusions about the novel styles. Shi and Anson measured liquid/liquid interface electron rate constants that emerged from electro active substance between 1,3‐diferroceny 1‐2‐buten‐1‐one (DMFc) in the organic phase and Ru(CN)63‐/4‐ or Mo(CN)83‐/4‐ or Fe(CN)63‐/4‐located in the adjacent aqueous phase.