Molecular transport through single molecules between eplitaxially grown contacts

外延生长触点之间通过单分子的分子传输

• 批准号: 25249675
• 负责人: Professor Dr. Holger Butenschön
• 金额: --
• 依托单位: Institut für Organische Chemie
• 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 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/25249675?language=en
• 关键词: Molecular; transport; through; single; molecules

In collaboration of a group from surface science with a group from organic chemistry, this experimental project combines the generation of nano-size contacts with the synthesis of ferrocene-based organic molecules and realted cobalt systems, the implementation of single molecules into the contact geometry and their physical characterization by electrical transport measurements, tunneling microscopy and spectroscopy. Nano-size contacts will be realized using a combination of e-beam lithography, self organization and electromigration, using epitaxial, crystalline and extremely thin metallic structures of Ag and Pb on low-doped Si. This will realize contact geometries that allow the characterization of these contacts on the atomic level and the direct correlation of geometric structures and electronic states of the adsorbed molecules with the electric transport properties of them. Systematic studies of molecular transport properties include the variation of the metallic contact materials, the molecules attached of them, and the molecular groups forming the metal-molecule bond. This contribution consists of introducing Ag and Pb as metallic structures and ferrocene-based molecules as well as sandwich complexes derived from (cyclobutadiene)-cyclopentadienylcobald to be attaches to the metals by a variety of end groups.

在表面科学小组和有机化学小组的合作下，这个实验项目结合了纳米尺寸接触的产生与二茂铁有机分子和相关钴系统的合成，将单分子实现到接触几何结构中，并通过电传输测量、隧道显微镜和光谱学来表征它们的物理特性。利用低掺杂Si上银和铅的外延、晶体和极薄金属结构，结合电子束光刻、自组织和电迁移，实现纳米级接触。这将实现接触几何，允许在原子水平上表征这些接触，以及吸附分子的几何结构和电子态与它们的电输运性质的直接关联。分子输运性质的系统研究包括金属接触材料的变化、金属接触材料上附着的分子以及形成金属-分子键的分子基团。这一贡献包括引入银和铅作为金属结构和二茂铁分子，以及由（环丁二烯）-环戊二烯基钴衍生的三明治配合物，通过各种端基附着在金属上。