The present Letter reports the synthesis of a designed diporphyrin (1), and its supramolecular complexes with C-60 and C-70 in toluene and benzonitrile medium. While UV-Vis studies reveal ground state interaction between fullerenes and 1, steady-state fluorescence measurements establish quenching of fluorescence of 1 by fullerenes. Binding constants data evoke that 1 may be employed as an efficient tweezer for C-70 in benzonitrile medium. Time resolved emission studies establish relatively long-lived charge separated state for the C-70/1 complex in both the solvents. Molecular mechanics force field calculations in vacuo establish the stereoscopic structures of the fullerene/1 complexes and interpret the stability difference between C-60 and C-70 complexes of 1. (C) 2010 Elsevier B.V. All rights reserved.