The electrochemistry of films made from cationic surfactant DDAB containing C-70 on a glassy carbon electrode was investigated in an aqueous solution, two couples of reduction/reoxidation peaks were found in the potential range from 0 to - 1.0 V. Electrochemically stable fullerene modified electrodes were produced. The cast films of C-70/DDAB were also characterized by SEM, XPS, and UV-vis. Furthermore, the electrocatalysis of hemoglobin at C-70/DDAB films was studied.