In comparison to other chromophores, porphyrins show very distinct photophysical and electrochemical features. Their redox and optical properties can easily be tuned by substitutions on the central porphyrin core, as well as by the insertion of a different metal ion in the cavity.[1–3] In this work, we have prepared four different dyads (Figure 1), where two metalloporphyrin units are connected either directly or via a phenylene linker at their meso-positions. A discrepancy in electronic and Coulombic interactions between two porphyrin cores is unambiguously demonstrated by cyclic voltammetry, UV-Vis absorption and fluorescence emission spectra. All these results will be presented and discussed in the virtual poster video.
