Abstract
The present paper reports the synthesis of free-base (H2–1) and zinc-triporphyrins Zn–1, and their supramolecular complexes with C60 and C70 in toluene. While UV–Vis studies reveal ground state interaction between fullerenes and triporphyrins, steady state fluorescence measurements establish quenching of fluorescence of triporphyrins by fullerenes. Binding constants data evoke that Zn–1 may be employed as an efficient tweezers for C70 in toluene. Time resolved emission studies establish relatively long-lived charge separated state for the C70/triporphyrin complexes. Molecular mechanics force field calculations in vacuo interpret the stability difference between C60/and C70/complexes of triporphyrin.
Published Version
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