Charge states of lanthanide double-decker phthalocyanines complexes significantly influence their geometrical structures and magnetic properties. In this study, the charge states of single DyPc₂ molecules on an ultrathin CuO film were detected by scanning tunneling microscopy and spectroscopy in magnetic fields. Four types of adsorptions of DyPc₂ molecules on CuO were experimentally observed. Without applying voltages, two of them were positively charged with the other two at the neutral state. By controlling the sample bias, two types of neutral molecules can be switched to the positively and negatively charged states, respectively. This manipulation was not realized for the DyPc₂ cations. A way to precisely detect the molecular charge states with and without current is beneficial for the development of molecular electronics.

中文翻译：

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超薄CuO薄膜上双层DyPc ₂分子的电荷态检测和操纵

镧系双层酞菁配合物的电荷状态显着影响其几何结构和磁性。在这项研究中，通过扫描隧道显微镜和光谱在磁场中检测了超薄CuO薄膜上单个DyPc ₂分子的电荷状态。实验上观察到DyPc ₂分子在CuO上的四种吸附类型。在不施加电压的情况下，其中两个在中性状态下与其他两个带正电。通过控制样本偏差，可以将两种类型的中性分子分别切换为带正电和带负电的状态。DyPc ₂无法实现此操作阳离子。一种精确检测有电流和无电流的分子电荷状态的方法，对分子电子学的发展是有益的。