Atomically precise naked cluster assemblies from ligand-stabilized clusters: New materials for catalysis (APCA)

我们将开发和应用一种以前未经测试的程序，在超高真空清洁表面上制备原子级精确的钴金属簇的2-和3-D阵列-研究它们的物理和化学性质。这是基于配体稳定的金属簇的合成，它们的电喷雾电离，（部分）配体汽提在气相中，然后质量选择和软着陆沉积。我们的目标是> 10 nA的质量选择离子电流，这将允许产生薄膜材料。除了探测组装体的电子和几何结构以及这些结构如何随着簇-表面和簇-簇相互作用而变化之外，我们还将探索所得材料的催化活性-特别关注掺杂Pt，Pd或Ir的钴金属簇。

We will develop and apply a previously untested procedure to prepare 2- and 3-D arrays of atomically precise coinage metal clusters on UHV clean surfaces - towards studying their physical and chemical properties. This is based on the synthesis of ligand-stabilized metal clusters, their electrospray ionization, (partial) ligand stripping in gas-phase followed by mass-selection and soft-landing deposition. We aim for mass-selected ion currents of > 10 nA which will allow for the generation of thin film materials. Apart from probes of the electronic and geometric structure of the assemblies and how these change with cluster-surface and cluster-cluster interactions we will explore the catalytic activity of the resulting materials - focusing in particular on coinage metal clusters doped with Pt, Pd or Ir.