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Coverage-Controlled Polymorphism of H-Bonded Networks on Au(111).

ABSTRACT: We report on the self-assembly of a conformational flexible organic compound on Au(111) using scanning tunneling microscopy and low-energy electron diffraction measurements. We observed different conformers of the compound upon adsorption on the reconstructed Au(111) surface. Increasing the molecular coverage enhanced the lateral pressure, that is, parallel to the surface, favoring a coverage-controlled transition from a supramolecular network displaying only one molecular organization, into a polymorphic array with two coexisting arrangements. Our results give insights into the role of substrate-induced conformational changes on the formation of polymorphic supramolecular networks.

SUBMITTER: Schmidt N 

PROVIDER: S-EPMC6443212 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Coverage-Controlled Polymorphism of H-Bonded Networks on Au(111).

Schmidt Nico N   Enache Mihaela M   Maggini Laura L   Havenith Remco W A RWA   Bonifazi Davide D   Stöhr Meike M  

The journal of physical chemistry. C, Nanomaterials and interfaces 20190304 12

We report on the self-assembly of a conformational flexible organic compound on Au(111) using scanning tunneling microscopy and low-energy electron diffraction measurements. We observed different conformers of the compound upon adsorption on the reconstructed Au(111) surface. Increasing the molecular coverage enhanced the lateral pressure, that is, parallel to the surface, favoring a coverage-controlled transition from a supramolecular network displaying only one molecular organization, into a p  ...[more]

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