Intelligent Molecular Tips for Chemically Sensitive Atomic Force Microscopy under High Resolution

用于高分辨率化学敏感原子力显微镜的智能分子探针

• 批准号: 400734514
• 负责人: Dr. Markus Bender
• 金额: --
• 依托单位: Department of Chemistry
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/400734514?language=en
• 关键词: Intelligent; Molecular; Tips; Chemically; Sensitive

The interdisciplinary project Intelligent Molecular Tips for Chemically Sensitive Atomic Force Microscopy under High Resolution is based on the basics of chemical, physical and material science. Organic synthesis chemistry is used for the manufacturing of new molecules, which form attractive interactions with metal atoms and thus provide effective coordination. The interaction of these molecules with the metal atoms is exploited to allow a controlled transfer to nanometer-sized metallic tips. The metallic tip (probe) is guided in a way similar to a needle printer over a sample (atoms, molecules) and physical interactions/forces between the sample and tip are registered. A direct image of the surface can be created from the registered signals. An interaction between a single atom of the metallic tip and the sample surface is necessary to ensure the visibility of individual atoms (high resolution). This is currently solely achievable in an uncontrolled manner, time-consuming and not directly reproducible through nonselective functionalization with individual atoms or small molecules in ultrahigh vacuum, since the metallic tips themselves do not have an atomically sharp geometry. The proposed molecules have the potential to provide a controlled and simplified transfer, to improve the stability of prepared tips compared to currently established standards and to pave the way for sophisticated imaging on atomic scale of more complex structures (e.g. natural products, microcrystalline materials).

高分辨率下化学敏感原子力显微镜的跨学科项目智能分子尖端基于化学，物理和材料科学的基础知识。有机合成化学用于制造新分子，这些分子与金属原子形成吸引力相互作用，从而提供有效的配位。这些分子与金属原子的相互作用被利用来允许受控地转移到纳米尺寸的金属尖端。金属尖端（探针）以类似于针式打印机的方式在样品（原子、分子）上被引导，并且记录样品和尖端之间的物理相互作用/力。表面的直接图像可以从记录的信号中产生。金属尖端的单个原子与样品表面之间的相互作用是确保单个原子的可见性（高分辨率）所必需的。这目前只能以不受控制的方式实现，耗时并且不能通过在真空中用单个原子或小分子的非选择性官能化直接再现，因为金属尖端本身不具有原子上尖锐的几何形状。所提出的分子有可能提供受控和简化的转移，与目前建立的标准相比，提高制备的尖端的稳定性，并为更复杂结构（例如天然产物，微晶材料）的原子尺度上的复杂成像铺平道路。