Fabrication and conductance characterization of single C60 molecular junction in solutions

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.

Single-molecule level control of host-guest interactions in metallocycle-C60 complexes

“…20). It is worth noting that the concentration of C 60 in our experiments was low (10 μM), and after rinsing with copious amounts of solvent, the coverage of C 60 on Au surface was too low to be measured by break junction methods 45–50 . However, C 60 featured two conductance peaks at ~0.2 G 0 and 0.5 G 0 , with a higher concentration of C 60 (7 mM), which is in agreement with reported values (Supplementary Fig.…”

Single Molecule Electronics with Fullerenes

“…The high conductance is in agreement with a previous report. [4] The low value is previously unreported. We observed, in the junction opening data, conductance versus distance plateaus corresponding well with the dimensions of a single C 60 , indicating that the molecule anchors well to the gold electrodes, in agreement with its similar binding to thiols adsorbed on gold surfaces.…”