论文标题
单层金属有机框架的合成和局部探测门控
Synthesis and Local Probe Gating of a Monolayer Metal-Organic Framework
论文作者
论文摘要
实现大面积均匀的二维（2D）金属有机框架（MOF）并控制其在惰性表面上的电子特性是迈向未来在电子设备中应用的重要一步。在这里，我们成功制造了一个2D单层Cu-DyCyanoAnthracene（DCA）MOF，并在外延石墨烯表面上具有远距离顺序。通过低温扫描隧道显微镜（STM）和光谱（STS）研究其结构和电子特性，并通过密度功能理论（DFT）计算补充。我们使用尖端诱导的局部电场证明了2D MOF中多个分子电荷状态的访问。我们希望可以采用类似的策略来制造和表征具有异国情调的，工程电子状态的2D MOF。
Achieving large-area uniform two-dimensional (2D) metal-organic frameworks (MOFs) and controlling their electronic properties on inert surfaces is a big step towards future applications in electronic devices. Here we successfully fabricated a 2D monolayer Cu-dicyanoanthracene (DCA) MOF with long-range order on an epitaxial graphene surface. Its structural and electronic properties are studied by low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) complemented by density-functional theory (DFT) calculations. We demonstrate access to multiple molecular charge states in the 2D MOF using tip-induced local electric fields. We expect that a similar strategy could be applied to fabricate and characterize 2D MOFs with exotic, engineered electronic states.
