Molecular adsorption on both quasicrystalline and approximant substrates has produced a number of pseudomorphic films, and has led to a deeper understanding of the chemistry of the surfaces of these materials. Here, the recently reported reconstructed (111) surface of the 1/1 Au-Al-Tb Tsai-type approximant has been used as a template for pentacene (Pn) adsorption, which is investigated using scanning tunneling microscopy. This surface provides unique varieties of adsorption sites compared to a normal metal surface. After room-temperature deposition, the Pn molecules are mobile yet exhibit a structure which indicates a bond with the Tb atoms of the surface, while reflecting the twofold symmetrical nature of the reported Au/Al row reconstruction. Postdeposition annealing shows a linear arrangement of molecules in a specific adsorption geometry, likely corresponding to the most favorable energetic configuration.

中文翻译：

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1/1 Au-Al-Tb 近似物（111）表面并五苯的生长：表面几何形状对吸附的影响

准晶体和近似基底上的分子吸附产生了许多假晶薄膜，并导致对这些材料表面化学的更深入了解。在这里，最近报道的 1/1 Au-Al-Tb Tsai 型近似物的重建 (111) 表面已用作并五苯 (Pn) 吸附的模板，并使用扫描隧道显微镜对其进行研究。与普通金属表面相比，该表面提供了多种独特的吸附位点。在室温沉积后，Pn 分子是可移动的，但仍表现出一种结构，表明与表面的 Tb 原子键合，同时反映了所报告的 Au/Al 行重建的双重对称性质。沉积后退火显示分子在特定吸附几何结构中的线性排列，