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Guided Molecular Assembly on a Locally Reactive 2D Material

Warner, B; Gill, T; Caciuc, V; Atodiresei, N; Fleurence, A; Yoshida, Y; Hasegawa, Y; ... Hirjibehedin, CF; + view all (2017) Guided Molecular Assembly on a Locally Reactive 2D Material. Advanced Materials , 29 (43) , Article 1703929. 10.1002/adma.201703929. Green open access

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Abstract

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.

Type: Article
Title: Guided Molecular Assembly on a Locally Reactive 2D Material
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/adma.201703929
Publisher version: http://dx.doi.org/10.1002/adma.201703929
Language: English
Additional information: © 2017 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1571124
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