Calix[4]arenes with Electroactive Tetrathiafulvalene and Quinone Units: Metal-Ion-Promoted Electron Transfer

Metal-ion-promoted electron transfer was observed for compounds 1 and 2 based on the absorption and ESR spectral results imply that spatially adjacent arrangement of TTF and quinone units in 1 and 2 due to the calix[4]arene platform is favorable for the intramolecular electron transfer.