Non-covalent immobilization of C60 on gold surfaces by SAMs of porphyrin derivatives

Three porphyrin derivatives, one containing thioctic ester groups () and the other two with thioether chains ( and ), were synthesized. The cyclic voltammograms of the porphyrin compounds exhibit two reversible reduction processes and one reversible oxidation. Stable self-assembled monolayers (SAMs) of the porphyrin compounds were formed on gold surfaces. Non-covalent immobilization of C60 was accomplished upon incubation of some of the porphyrin SAMs in solutions of C60.