Experimental Realization of One-Dimensional Metal-Inorganic Chain: Gold–Phosphorus Chain,ACS Materials Letters

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Experimental Realization of One-Dimensional Metal-Inorganic Chain: Gold–Phosphorus Chain
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-06-19 , DOI: 10.1021/acsmaterialslett.0c00233
Shuo Sun _{1,

2} , Tong Yang ₁ , Zhirui Ma ₂ , Honghe Ding ₃ , Songtao Zhao ₄ , Jun Hu ₃ , Qian Xu ₃ , Xu Lian ₂ , Chengding Gu ₂ , Zhenyu Li ₅ , Junfa Zhu ₃ , Jia Lin Zhang _{1,

2} , Yuan Ping Feng ₁ , Wei Chen _{1,

2,

6,

7}

Affiliation

Porous metal-organic frameworks have attracted tremendous research interest, because of the presence of tunable porous structures and site-isolated catalytic units. However, bottom-up on-surface synthesis of their inorganic counterparts, metal-inorganic frameworks (MIFs), is rarely demonstrated. Here, we report a facile epitaxial growth of one-dimensional (1D) porous metal-inorganic chains, gold–phosphorus chains (AuP chains), in which phosphorus magic clusters P₄ are interconnected by Au atoms extracted from the underlying Au(110) surface. The atomic structure has been precisely revealed through the combination of low-temperature scanning tunneling microscopy, X-ray photoelectron spectroscopy, and density functional theory calculations. The growth process involves the formation of phosphorus dimers sitting at the bridge sites of the top rows of Au(110) (2 × 1) reconstructed surface at low coverage, followed by the etching of the phosphorus dimers and the transformation to 1D AuP chains with prolonged phosphorus deposition. Our findings provide a facile method for on-surface synthesis of 1D MIFs and pave the way for their potential applications in the future.

中文翻译：

一维金属-无机链的实验实现：金磷链

由于存在可调的多孔结构和位点隔离的催化单元，多孔金属有机框架吸引了巨大的研究兴趣。然而，很少有人证明其无机对应物金属-无机骨架（MIF）的自下而上的表面合成。在这里，我们报告了一维（1D）多孔金属-无机链，金-磷链（AuP链）的外延生长，其中磷魔术团簇P ₄通过从下面的Au（110）表面提取的Au原子相互连接。通过结合低温扫描隧道显微镜，X射线光电子能谱和密度泛函理论计算，可以精确地揭示原子结构。生长过程包括在低覆盖率的Au（110）（2×1）重建表面顶行的桥位处形成磷二聚体，然后蚀刻磷二聚体并转化为一维AuP链，磷沉积时间延长。我们的发现为一维MIF的表面合成提供了一种简便的方法，并为将来的潜在应用铺平了道路。

更新日期：2020-07-06

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