Tivanski Alexei V, He Yufan, Borguet Eric, Liu Haiying, Walker Gilbert C, Waldeck David H
Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
J Phys Chem B. 2005 Mar 31;109(12):5398-402. doi: 10.1021/jp050022d.
Single-molecule electrical conduction studies are used to evaluate how the molecular linking unit influences the tunneling efficiency in metal-molecule-metal (m-M-m) junctions. This work uses conducting-probe atomic force microscopy (CP-AFM) to compare the molecular conduction of two pi-bonded molecules: one with a single thiol linker, and another with a conjugated double thiol linker at both ends of the molecules. The results demonstrate that the molecule with conjugated double thiol linkers displays higher conduction in gold-molecule-gold junctions than nonconjugated single thiol-gold contacts.
单分子导电研究用于评估分子连接单元如何影响金属-分子-金属（m-M-m）结中的隧穿效率。这项工作使用导电探针原子力显微镜（CP-AFM）来比较两种π键合分子的分子导电性：一种分子带有单个硫醇连接基，另一种分子在两端带有共轭双硫醇连接基。结果表明，在金-分子-金结中，带有共轭双硫醇连接基的分子比非共轭单硫醇-金接触显示出更高的导电性。
