Exceptional Redox and Photophysical Properties of a Triply Fused Diporphyrin–C₆₀ Conjugate: Novel Scaffolds for Multicharge Storage in Molecular Scale Electronics

Abstract

Up to fifteen electrons are reversibly accommodated in a triply fused porphyrin dimer conjugated to two [60]fullerene moieties. Its photophysical properties differ completely from those of the many known porphyrin–fullerene dyads: Photoexcitation of the C60 moieties results in quantitative sensitization of the low-lying (about 1 eV) and very short lived lowest singlet level of the porphyrin sheet (see scheme).