Electronic excitations of the fullerene-thiophene-derived dyads

▶ The set of five fullerene-thiophene-derived dyads have been investigated. ▶ UV-vis absorption spectroscopy and time dependent DFT calculations have been used. ▶ In four dyads the strongest electronic excitations are due to fullerene part. ▶ The strongest electronic excitations in 3T-F are due to oligothiophene part. ▶ The HOMO-LUMO gap in 3T-F is smaller than in the other dyads.