Photophysical insights into fullerene–porphyrazine supramolecular interactions in solution

Abstract

This communication reports UV-vis, fluorescence and quantum chemical investigations on the supramolecular interactions of a porphyrazine derivative, namely, 2,7,12,17-tetra-tert-butyl-5,10,15,20-tetraaza-21H,23H-porphine (1) with C₆₀ and C₇₀ in toluene and dichlorobenzene. A synergistic combination of rigidity in the host molecule and a shape-selective binding motif give rise to the strongest binding of C₆₀ with porphyrazine.