An electrochemical jump-to-contact STM-break junction approach to construct single molecular junctions with different metallic electrodes

作者：Zhou, Xiao-Shun^*; Liang, Jing-Hong; Chen, Zhao-Bin; Mao, Bing-Wei

来源：Electrochemistry Communications, 2011, 13(5): 407-410.

DOI：10.1016/j.elecom.2011.02.005

• Single molecular junction conductance
• ECSTM-BJ
• Cu
• Ag
• Au
• Carboxyl acid

In this communication, we demonstrate an approach for conductance measurement of single molecular junctions with different metallic electrodes based on STM-break junction (STM-BJ) technique with electrochemical strategy. Conductance of molecular junctions formed with succinic acid using Cu, Ag and Au as metal electrodes has been systemically studied, the values being 18.6, 13.2 and 5.6 nS for Cu, Ag and Au electrodes, respectively. The observed decrease in conductance indicates the weakening of electronic coupling efficiency at the electrode-molecule contacts in the order of Cu>Ag>Au, which should be taken into account in evaluating the molecular conductance in the junctions.

• 出版日期2011-5
• 单位浙江师范大学; 厦门大学