使用扫描隧道显微镜对单双核金属络合物分子进行观察。

Observation of single dinuclear metal-complex molecules using scanning tunneling microscopy.

作者信息

Wei Zhongqing, Guo Song, Kandel S Alex

机构信息

Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA.

出版信息

J Phys Chem B. 2006 Nov 2;110(43):21846-9. doi: 10.1021/jp0636928.

DOI:10.1021/jp0636928

PMID:17064149

Abstract

We report a scanning tunneling microscopy (STM) investigation of a dinuclear organometallic molecule, trans-[Cl(dppe)2Ru(C[triple bond]C)6Ru(dppe)2Cl] (Ru2), absorbed on a Au(111) surface; this molecule is a potential candidate for use in molecular quantum-dot cellular automata (QCA) devices. Isolated Ru2 molecules were observed under ultra-high-vacuum conditions. Submolecular structure was clearly discernible in the STM images, with a bright feature corresponding to each of the two Ru-ligand complexes within the Ru2 molecule. Rotation and translation of the Ru2 molecules were observed to be induced by the STM tip under some tunneling conditions.

摘要

我们报告了一项关于吸附在Au(111)表面的双核有机金属分子反式-[Cl(dppe)₂Ru(C≡C)₆Ru(dppe)₂Cl] (Ru₂)的扫描隧道显微镜(STM)研究；该分子是用于分子量子点细胞自动机(QCA)器件的潜在候选物。在超高真空条件下观察到了孤立的Ru₂分子。在STM图像中可以清楚地分辨出亚分子结构，Ru₂分子内的两个Ru-配体络合物中的每一个都对应着一个明亮的特征。在某些隧穿条件下，观察到STM针尖可诱导Ru₂分子发生旋转和平移。