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Two-dimensional ketone-driven metal-organic coordination on Cu(111)

Della Pia, Ada, Riello, Massimo, Lawrence, James, Stassen, Daphne, Jones, Tim S., Bonifazi, Davide ORCID:, De Vita, Alessandro and Costantini, Giovanni 2016. Two-dimensional ketone-driven metal-organic coordination on Cu(111). Chemistry - a European Journal 22 (24) , pp. 8105-8112. 10.1002/chem.201600368

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Two-dimensional metal–organic nanostructures based on the binding of ketone groups and metal atoms were fabricated by depositing pyrene-4,5,9,10-tetraone (PTO) molecules on a Cu(111) surface. The strongly electronegative ketone moieties bind to either copper adatoms from the substrate or codeposited iron atoms. In the former case, scanning tunnelling microscopy images reveal the development of an extended metal–organic supramolecular structure. Each copper adatom coordinates to two ketone ligands of two neighbouring PTO molecules, forming chains that are linked together into large islands through secondary van der Waals interactions. Deposition of iron atoms leads to a transformation of this assembly resulting from the substitution of the metal centres. Density functional theory calculations reveal that the driving force for the metal substitution is primarily determined by the strength of the ketone–metal bond, which is higher for Fe than for Cu. This second class of nanostructures displays a structural dependence on the rate of iron deposition.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Wiley-Blackwell
ISSN: 0947-6539
Funders: Engineering and Physical Sciences Research Council
Date of First Compliant Deposit: 15 April 2016
Date of Acceptance: 1 April 2016
Last Modified: 01 Nov 2022 09:48

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