Sara Fortuna (Author), Pierluigi Gargiani (Author), Maria Grazia Betti (Author), Carlo Mariani (Author), Arrigo Calzolari (Author), Silvio Modesti (Author), Stefano Fabris (Author)

Abstract

The structural patterns formed by molecular self-assembly at surfaces are usually controlled by the relative strengths of the intermolecular and molecule–substrate interactions. An additional steering effect is present when the substrate can easily reconstruct upon molecular adsorption, which therefore drives a self-templating effect on the metal support. This is here demonstrated for the model case of Fe-phthalocyanine molecules adsorbed on the Au(110) surface. Scanning tunneling microscopy shows that molecular adsorption promotes a local (1 × 5) surface reconstruction, which drives the assembly of molecular chains along the [11̅0] direction. The order and periodicity of the molecular assemblies are determined with low energy electron diffraction patterns. Density functional theory calculations reveal the energetic origins of the molecule-driven substrate reconstruction. Since the function of molecular overlayers at surfaces is strongly correlated to their structure, these results have implications in the design of new metal/molecular interfaces.

Keywords

self-assembly;phthalocyanine;DFT;density functional theory;simulations;surface;recontruction;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UNG - University of Nova Gorica
UDC: 54
COBISS: 4534267 Link will open in a new window
ISSN: 1932-7447
Views: 3988
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Other data

URN: URN:SI:UNG
Type (COBISS): Not categorized
Pages: str. 6251-6258
Volume: ǂVol. ǂ116
Issue: ǂno. ǂ10
Chronology: 2012
DOI: 10.1021/jp211036m
ID: 9175954