Complex k-uniform tilings by a simple bitopic precursor self-assembled on Ag(001) surface

The realization of complex long-range ordered structures in a Euclidean plane presents a significant challenge en route to the utilization of their unique physical and chemical properties. Recent progress in on-surface supramolecular chemistry has enabled the engineering of regular and semi-regular...

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Bibliographic Details
Published in:Nature communications 2020-04, Vol.11 (1), p.1856-1856, Article 1856
Main Authors: Kormoš, Lukáš, Procházka, Pavel, Makoveev, Anton O., Čechal, Jan
Format: Article
Language:English
Subjects:
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Acids
Annealing
Apexes
Biphenyl
Chemical properties
Dicarboxylic acids
Euclidean geometry
Fractal geometry
Humanities and Social Sciences
Hydrogen
Microscopy
multidisciplinary
Polygons
Precursors
Science
Science (multidisciplinary)
Self-assembly
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Summary:The realization of complex long-range ordered structures in a Euclidean plane presents a significant challenge en route to the utilization of their unique physical and chemical properties. Recent progress in on-surface supramolecular chemistry has enabled the engineering of regular and semi-regular tilings, expressing translation symmetric, quasicrystalline, and fractal geometries. However, the k -uniform tilings possessing several distinct vertices remain largely unexplored. Here, we show that these complex geometries can be prepared from a simple bitopic molecular precursor – 4,4’-biphenyl dicarboxylic acid (BDA) – by its controlled chemical transformation on the Ag(001) surface. The realization of 2- and 3-uniform tilings is enabled by partially carboxylated BDA mediating the seamless connection of two distinct binding motifs in a single long-range ordered molecular phase. These results define the basic self-assembly criteria, opening way to the utilization of complex supramolecular tilings. Division of a Euclidean plane into regular polygons may result in intriguing physical and chemical properties. Here the authors present a way to synthesize complex k -uniform tilings at surfaces by a partial chemical transformation of a precursor molecule.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-020-15727-6