We demonstrate the first formation of stable, multistate switchable monolayers of polyoxometalates (POMs), which can be electronically triggered to higher charged states with increased conductance in the current–voltage profile at room temperature. These responsive two-dimensional monolayers are based on a fully oxidised dodecavanadate cage (POV12) equipped with Dy(III)-doped phthalocyanine (Pc) macrocycles adopting the face-on orientation on highly oriented pyrolytic graphite (HOPG). The layers can be lithographically processed by the tip of a scanning tunnelling microscope (STM) to machine patterns with diameters ranging from 30 to 150 nm².

中文翻译：

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扫描隧道显微镜在石墨上加工的多钒酸镝酞菁纳米图案的多态切换

我们首次展示了稳定、多态可切换的多金属氧酸盐 (POM) 单分子层，它可以通过电子方式触发到更高的带电状态，并在室温下增加电流-电压曲线的电导。这些响应性二维单分子层基于完全氧化的十二钒酸盐笼 (POV12)，配备 Dy(III) 掺杂酞菁 (Pc) 大环化合物，采用高取向热解石墨（HOPG）上的正面取向。这些层可以通过扫描隧道显微镜 (STM) 的尖端进行光刻处理，以加工直径范围为 30 至 150 nm 的图案²。²。一个>