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Mapping the electrostatic force field of single molecules from high-resolution scanning probe images.

ABSTRACT: How electronic charge is distributed over a molecule determines to a large extent its chemical properties. Here, we demonstrate how the electrostatic force field, originating from the inhomogeneous charge distribution in a molecule, can be measured with submolecular resolution. We exploit the fact that distortions typically observed in high-resolution atomic force microscopy images are for a significant part caused by the electrostatic force acting between charges of the tip and the molecule of interest. By finding a geometrical transformation between two high-resolution AFM images acquired with two different tips, the electrostatic force field or potential over individual molecules and self-assemblies thereof can be reconstructed with submolecular resolution.

SUBMITTER: Hapala P

PROVIDER: S-EPMC4894979 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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Mapping the electrostatic force field of single molecules from high-resolution scanning probe images.

Hapala Prokop P Švec Martin M Stetsovych Oleksandr O van der Heijden Nadine J NJ Ondráček Martin M van der Lit Joost J Mutombo Pingo P Swart Ingmar I Jelínek Pavel P

Nature communications 20160527

How electronic charge is distributed over a molecule determines to a large extent its chemical properties. Here, we demonstrate how the electrostatic force field, originating from the inhomogeneous charge distribution in a molecule, can be measured with submolecular resolution. We exploit the fact that distortions typically observed in high-resolution atomic force microscopy images are for a significant part caused by the electrostatic force acting between charges of the tip and the molecule of ...[more]

PMID: 27230940

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