In-situ formation of one-dimensional coordination polymers in molecular junctions

Vladyka, Anton and Perrin, Mickael L. and Overbeck, Jan and Ferradás, Rubén R. and García-Suárez, Víctor and Gantenbein, Markus and Brunner, Jan and Mayor, Marcel and Ferrer, Jaime and Calame, Michel. (2019) In-situ formation of one-dimensional coordination polymers in molecular junctions. Nature Communications, 10 (1). p. 262.

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Official URL: https://edoc.unibas.ch/75479/

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We demonstrate the bottom-up in-situ formation of organometallic oligomer chains at the single-molecule level. The chains are formed using the mechanically controllable break junction technique operated in a liquid environment, and consist of alternating isocyano-terminated benzene monomers coordinated to gold atoms. We show that the chaining process is critically determined by the surface density of molecules. In particular, we demonstrate that by reducing the local supply of molecules within the junction, either by lowering the molecular concentration or by adding side groups, the oligomerization process can be suppressed. Our experimental results are supported by ab-initio simulations, confirming that the isocyano terminating groups display a high tendency to form molecular chains, as a result of their high affinity for gold. Our findings open the road for the controlled formation of one-dimensional, single coordination-polymer chains as promising model systems of organometallic frameworks.
Faculties and Departments:05 Faculty of Science
05 Faculty of Science > Departement Chemie
05 Faculty of Science > Departement Physik
05 Faculty of Science > Departement Physik > Physik
05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Calame, Michel and Mayor, Marcel and Vladyka, Anton and Overbeck, Jan and Brunner, Jan
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:20 Apr 2021 10:24
Deposited On:18 Feb 2020 08:42

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