Ruthenium Tris‐bipyridine Single‐Molecule Junctions with Multiple Joint Configurations,Chemistry - An Asian Journal

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Ruthenium Tris‐bipyridine Single‐Molecule Junctions with Multiple Joint Configurations
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-04-20 , DOI: 10.1002/asia.201800166
Yuuki Komoto ₁ , Yasuomi Yamazaki ₁ , Yusuke Tamaki ₁ , Madoka Iwane ₁ , Tomoaki Nishino ₁ , Osamu Ishitani ₁ , Manabu Kiguchi ₁ , Shintaro Fujii ₁

Affiliation

Single‐molecule junctions are of particular interest in molecular electronics. To realize molecular electronic devices, it is crucial that functional single‐molecule junctions are connected to each other by using joint units on the atomic scale. However, good joint units have not been reported because controlling the charge transport directions through the junctions is not trivial. Here, we report a joint unit that controls and changes the charge transport directions through the junctions, by using a ruthenium–tris‐bipyridine (RuBpy) complex. The RuBpy single‐molecule junction was fabricated with scanning tunnelling microscopy‐based break junction techniques. The RuBpy single‐molecule junction showed two distinct high and low conductance states. The two states were characterized by the conductance measurement, the correlation analysis, and the comparative experiment of bipyridine (Bpy), which is the ligand unit of RuBpy. We demonstrate that the Ru complex has multiple charge transport paths, where the charge is carried vertically and horizontally through the complex depending on the path.

中文翻译：

具有多个接头构型的钌三联吡啶单分子结

单分子结在分子电子学中特别重要。为了实现分子电子设备，至关重要的是，通过使用原子级的联合单元将功能性单分子结相互连接。然而，由于控制通过结的电荷传输方向并非易事，因此尚未报道良好的接头单元。在这里，我们报告了一个联合单元，该单元通过使用钌-三-联吡啶（RuBpy）复合物来控制和改变通过结的电荷传输方向。RuBpy单分子连接是通过基于扫描隧道显微镜的断裂连接技术制造的。RuBpy单分子结显示出两个不同的高电导状态和低电导状态。通过电导测量，相关分析来表征这两种状态，以及RuBpy的配体单元联吡啶（Bpy）的对比实验。我们证明Ru络合物具有多个电荷传输路径，其中电荷根据路径在垂直方向和水平方向通过复合物。

更新日期：2018-04-20

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