Abstract

The conductance and stretching length of the single C 60 molecule bridging two Au electrodes (C 60 molecular junction) were studied in air, mesitylene and 0.1 M HClO 4 solution. In air, the C 60 molecular junction did not show any well-defined conductance value. In either mesitylene or HClO 4 solution, the systems showed a conductance value of 0.01 G 0. The stretching length of the single C 60 molecular junction was determined to be 0.01 nm. The values of the conductance and stretching length in solution were smaller than those obtained in ultra high vacuum, indicating the weak C 60–Au interaction in solution. Considering the particular shape of the C 60 molecule and the junction formation process in the present system, a sliding model was proposed to interpret the observation.

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