Guided molecular assembly on a locally reactive two-dimensional material

Published on 2017-10-11T13:34:16Z (GMT) by Toby Gill
<div>Atomically precise engineering of the position of molecular adsorbates on surfaces of 2D materials is key to their development in applications ranging from catalysis to single-molecule spintronics. Here, stable room-temperature templating of individual molecules with localized electronic states on the surface of a locally reactive 2D material, silicene grown on ZrB2, is demonstrated. Using a combination of scanning tunneling microscopy and density functional theory, it is shown that the binding of iron phthalocyanine (FePc) molecules is mediated via the strong chemisorption of the central Fe atom to the sp3-like dangling bond of Si atoms in the linear silicene domain boundaries. Since the planar Pc ligand couples to the Fe atom mostly through the in-plane d orbitals, localized electronic states resembling those of the free molecule can be resolved. Furthermore, rotation of the molecule is restrained because of charge rearrangement induced by the bonding. These results highlight how nanoscale changes can induce reactivity in 2D materials, which can provide unique surface interactions for enabling novel forms of guided molecular assembly.<br></div><div><br></div>This collection contains the experimental data used for the production of the scanning tunneling microscopy (STM) and spectroscopy (STS) figures used in the linked publication.<div><br></div><div><br></div>

Cite this collection

Warner, Ben; Gill, Toby; Caciuc, Vasile; Atodiresei, Nicolae; Fleurence, Antoine; Yoshida, Yasuo; et al. (2017): Guided molecular assembly on a locally reactive two-dimensional material. Hirjibehedin Research Group. Collection.