For the selective binding of the fullerene C-70, we report here on the inclusion properties of a novel metallo-porphyrin dimer 1 which entails the functionalization of the basic supramolccular frame of a calix[4]arene. First, the electrochemical property of 1 was evaluated by a voltammetric method. The redox potential for reduction is - 0.46 V vs. Fc/Fc(+), and those for the first and second oxidation are 0.14 V and 0.32 V vs. Fc/Fc(+) respectively. These results show two porphyrin moieties of 1 are essentially unperturbed each other. Second, the selectivity factor of C-70 for 1 is remarkably large as compared with competing C-60, because evidence for the formation of the complex came from H-1 NMR and fluorescence spectroscopic studies. In any event, the present work shows two porphyrin groups of 1 serve as tweezers to capture C-70 by two-point fixation.