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

Research output: Contribution to journalArticle

Authors

  • Mickael L. Perrin
  • Jan Overbeck
  • Rubén R. Ferradás
  • Víctor García-Suárez
  • Markus Gantenbein
  • Jan Brunner
  • Marcel Mayor
  • Jaime Ferrer
  • Michel Calame

Colleges, School and Institutes

Abstract

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.

Details

Original languageEnglish
Article number262
Pages (from-to)262
Number of pages1
JournalNature Communications
Volume10
Issue number1
Publication statusPublished - 16 Jan 2019