An extended chiral surface coordination network based on Ag7-clusters

Katrine L. Svane, Mahdi Sadeghzadeh Baviloliaei, Bjørk Hammer, Lars Diekhöner

Research output: Contribution to journalJournal articleResearchpeer-review

3 Citations (Scopus)

Abstract

We present an extended metal-coordinated structure obtained by deposition of trimesic acid (TMA) onto the Ag(111) surface under ultra-high vacuum conditions followed by annealing to 510 K. Scanning tunneling microscopy and density functional theory calculations reveal the structure to consist of metal clusters containing seven Ag atoms each, coordinated by six dehydrogenated TMA molecules. The molecules are asymmetrically arranged, resulting in a chiral structure. The calculations confirm that this structure has a lower free energy under the experimental conditions than the hydrogen-bonded structures observed after annealing at lower temperatures. We show that the formation of such large metal clusters is possible due to the low adatom formation energy on silver and the relatively strong Ag-O bond in combination with a good lattice match between the structure and the Ag surface.

Original languageEnglish
Article number164710
JournalJournal of Chemical Physics
Volume149
Issue number16
Number of pages10
ISSN0021-9606
DOIs
Publication statusPublished - 28 Oct 2018

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metal clusters
Metals
acids
annealing
energy of formation
Annealing
adatoms
ultrahigh vacuum
scanning tunneling microscopy
molecules
Molecules
Adatoms
free energy
silver
Ultrahigh vacuum
Scanning tunneling microscopy
density functional theory
Silver
Free energy
Density functional theory

Cite this

Svane, Katrine L. ; Baviloliaei, Mahdi Sadeghzadeh ; Hammer, Bjørk ; Diekhöner, Lars. / An extended chiral surface coordination network based on Ag7-clusters. In: Journal of Chemical Physics. 2018 ; Vol. 149, No. 16.
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An extended chiral surface coordination network based on Ag7-clusters. / Svane, Katrine L.; Baviloliaei, Mahdi Sadeghzadeh; Hammer, Bjørk; Diekhöner, Lars.

In: Journal of Chemical Physics, Vol. 149, No. 16, 164710, 28.10.2018.

Research output: Contribution to journalJournal articleResearchpeer-review

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AU - Svane, Katrine L.

AU - Baviloliaei, Mahdi Sadeghzadeh

AU - Hammer, Bjørk

AU - Diekhöner, Lars

PY - 2018/10/28

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