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

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