Rigid multipodal platforms for metal surfaces.
Rigid multipodal platforms for metal surfaces.
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DOI：
10.3762/bjnano.7.34
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发表时间：
2016
影响因子：
3.1
通讯作者：
Mayor M
中科院分区：
文献类型：
--
作者：
Valášek M;Lindner M;Mayor M
在这篇综述中，分子平台，形成刚性和明确的金属表面接触的最新进展进行了讨论。大多数呈现的实施例具有至少三个锚定单元，以便控制突出分子亚单元的空间排列。另一个有趣的特征是这些足结构的横向取向，取决于特定的应用，其与分子的空间排列同样重要。本文综述了在金属基底上组装和组织功能分子形成特定结构的方法。特别注意的是支付给这两个，核心结构和锚定基团的变化。此外，分析方法，使调查的个别分子以及单分子层的有序平台结构进行了总结。承载几个锚定基团的多足平台形成比相应的单足类似物更稳定的分子-金属接触，并且由于足迹增加而表现出功能分子的扩大分离，以及限制功能末端相对于金属表面的倾斜。因此，这些平台非常适合调节分子-金属界面的重要性质。在单分子水平上，其中几个平台能够控制突出的棒状分子结构的排列（例如，分子线、开关、转子、传感器）相对于衬底表面的位置。
In this review the recent progress in molecular platforms that form rigid and well-defined contact to a metal surface are discussed. Most of the presented examples have at least three anchoring units in order to control the spatial arrangement of the protruding molecular subunit. Another interesting feature is the lateral orientation of these foot structures which, depending on the particular application, is equally important as the spatial arrangement of the molecules. The numerous approaches towards assembling and organizing functional molecules into specific architectures on metal substrates are reviewed here. Particular attention is paid to variations of both, the core structures and the anchoring groups. Furthermore, the analytical methods enabling the investigation of individual molecules as well as monomolecular layers of ordered platform structures are summarized. The presented multipodal platforms bearing several anchoring groups form considerably more stable molecule–metal contacts than corresponding monopodal analogues and exhibit an enlarged separation of the functional molecules due to the increased footprint, as well as restrict tilting of the functional termini with respect to the metal surface. These platforms are thus ideally suited to tune important properties of the molecule–metal interface. On a single-molecule level, several of these platforms enable the control over the arrangement of the protruding rod-type molecular structures (e.g., molecular wires, switches, rotors, sensors) with respect to the surface of the substrate.