The electronic transport in single molecules, linked between a metallic substrate and a SNOM tip, will be studied by inelastic scattering methods

将通过非弹性散射方法研究连接金属基板和 SNOM 尖端的单分子中的电子传输

• 批准号: 25002787
• 负责人: Dr. Joachim Reichert
• 金额: --
• 依托单位: Arbeitsgruppe Oberflächen- und Grenzflächenphysik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/25002787?language=en
• 关键词: electronic; transport; single; molecules; linked

Electronic transport measurements on single molecules which are immobilized by self-assembling techniques between two metallic electrodes proofed the ability of organic molecules to act as functional parts in nano-scale-devices. Recent developments and advances in atomic-scale imaging and manipulation techniques enables access to a new field of single molecule experiments. Especially scanning near field optical microcopy with its ability to apply an optical field to a molecular system in a controlled manner enlarges the range of experimentally available properties in metal-anchored molecular junctions. A novel method to contact single molecules with a SNOM-tip has been developed. In parallel it has been proofed, that Raman spectroscopy on a molecular level of adsorbates on Au using the same kind of tetrahedral SNOM-tip is possible. We propose to combine these two experiments to perform Raman spectroscopy and conductance measurements at the same time. Analysis of the vibrational spectrum of a molecule in between two metallic electrodes would verify that the desired and only the desired molecular species is present. Such an analysis would furthermore lead to physical insights that as far as known have not been studied yet.

通过自组装技术在两个金属电极之间固定的单分子的电子输运测量证明了有机分子在纳米级器件中充当功能部件的能力。原子尺度成像和操作技术的最新发展和进步使人们能够进入一个新的单分子实验领域。尤其是扫描近场光学显微复制，它能够以可控的方式将光场应用于分子系统，扩大了金属锚定分子结的实验可用性质的范围。提出了一种用snom尖端接触单分子的新方法。同时也证明了利用同种四面体snom尖端在分子水平上吸附金的拉曼光谱是可能的。我们建议将这两个实验结合起来，同时进行拉曼光谱和电导测量。对两个金属电极之间的分子的振动谱的分析将证实所需要的并且只有所需要的分子种类存在。这样的分析将进一步导致迄今为止尚未研究过的物理见解。