ArticleNano letters2022
Molecular Diffusion and Self-Assembly: Quantifying the Influence of Substrate hcp and fcc Atomic Stacking.
Article in Nano letters, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Anisotropic Diffusion Barrier of Benzene on Cu(111) Measured by Single-Molecule Manipulation.JACS Au · 2026Article
- Emergence of conformational diversity and complexity of supramolecular structure by the interaction of a simple molecule with a uniform surface.Communications chemistry · 2025Article
- Inter- and Intramolecular On-Surface Synthesis of Porphyrin-Based Nanostructures on Au(111) and Cu(111).ACS applied nano materials · 2025Article
- Thermally-induced nickelocene fragmentation and one-dimensional chain assembly on Au(111).Communications chemistry · 2025Article
- From Chains to Arrays: Substrate-Mediated Self-Assembly of Diboron Molecules.Nanomaterials (Basel, Switzerland) · 2024Article
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Authors and funding
2 authors.
Funding
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Abstract
Molecular diffusion is a fundamental process underpinning surface-confined molecular self-assembly and synthesis. Substrate topography influences molecular assembly, alignment, and reactions with the relationship between topography and diffusion linked to the thermodynamic evolution of such processes. Here, we observe preferential adsorption sites for tetraphenylporphyrin (2H-TPP) on Au(111) and interpret nucleation and growth of molecular islands at these sites in terms of spatial variation in diffusion barrier driven by local atomic arrangements of the Au(111) surface (the 22× √3 "herringbone" reconstruction). Variable-temperature scanning tunnelling microscopy facilitates characterization of molecular diffusion, and Arrhenius analysis allows quantitative characterization of diffusion barriers within fcc and hcp regions of the surface reconstruction (where the in-plane arrangement of the surface atoms is identical but the vertical stacking differs). The higher barrier for diffusion within fcc locations underpins the ubiquitous observation of preferential island growth within fcc regions, demonstrating the relationship between substrate-structure, diffusion, and molecular self-assembly.
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