New functionalized and soluble bis-tetrathiafulvalene derivatives as building blocks in the construction of fullerene-derived electroactive triads

Novel functionalized bis-tetrathiafulvalene (TTF) derivatives are built on the 1,3,5-benzene core. Long alkyl chains have been incorporated on peripheral positions of the TTF moieties in order to increase the solubility of the final products. After appropriate functionalization of the bis-TTF it has been covalently attached to the C60 core yielding the first C60–TTF2 triad. Electrochemical and spectroscopic studies of the target compounds suggest that there are no significant interactions between the TTF units and the C60 moiety in the ground state.