Abstract
Abstract The redox behavior of C60 films was examined in the presence of soluble 18-crown-6 complexes of alkali metals. The formation of stable fulleride films was observed for the process of C60 layer reduction in the presence of 18-crown-6 complexes of potassium. Two different structures of C60− salts are believed to be formed during the electrochemically induced intercalation of this complex into the C60 solid layer. However, for the Li+ and Cs+ complexes the process of C60 film reduction and re-oxidation was observed to be irreversible. The energy of these alkali metal cation intercalated layers is lower than that of the crown ether complex formation. Therefore, the dissociation of the crown complex and irreversible intercalation of lithium and caesium cations into the structure of C60 film predominates.
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