Dependence of Single-Molecule Conductance on Molecule Junction Symmetry
Journal of the American Chemical Society2011Vol. 133(30), pp. 11426–11429
Citations Over TimeTop 10% of 2011 papers
Masateru Taniguchi, Makusu Tsutsui, Ryoji Mogi, Tadashi Sugawara, Yuta Tsuji, Kazunari Yoshizawa, Tomoji Kawai
Abstract
The symmetry of a molecule junction has been shown to play a significant role in determining the conductance of the molecule, but the details of how conductance changes with symmetry have heretofore been unknown. Herein, we investigate a naphthalenedithiol single-molecule system in which sulfur atoms from the molecule are anchored to two facing gold electrodes. In the studied system, the highest single-molecule conductance, for a molecule junction of 1,4-symmetry, is 110 times larger than the lowest single-molecule conductance, for a molecule junction of 2,7-symmetry. We demonstrate clearly that the measured dependence of molecule junction symmetry for single-molecule junctions agrees with theoretical predictions.
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