Contact chemistry and single-molecule conductance: A comparison of phosphines, methyl sulfides, and amines
Contact chemistry and single-molecule conductance: A comparison of phosphines, methyl sulfides, and amines
复制标题
DOI：
10.1021/ja0773857
复制
发表时间：
2007-12-26
影响因子：
15
通讯作者：
Venkataraman, Latha
中科院分区：
文献类型：
--
作者：
Park, Young S.;Whalley, Adam C.;Venkataraman, Latha
我们比较了低偏压电导的一系列烷烃终止在其末端与二甲基膦，甲硫醚，和胺，并发现与二甲基膦终止烷烃形成的结具有最高的电导。我们看到明确的电导签名与这些链接组，表明绑定是明确的和电子选择性。这允许详细分析的单分子结的伸长特性，以及相关的计算基于密度泛函理论。
We compare the low bias conductance of a series of alkanes terminated on their ends with dimethyl phosphines, methyl sulfides, and amines and find that junctions formed with dimethyl phosphine terminated alkanes have the highest conductance. We see unambiguous conductance signatures with these link groups, indicating that the binding is well-defined and electronically selective. This allows a detailed analysis of the single-molecule junction elongation properties which correlate well with calculations based on density functional theory.