Interaction of a conjugated polyaromatic molecule with a single dangling bond quantum dot on a hydrogenated semiconductor

Physical Chemistry Chemical Physics : PCCP
Szymon GodlewskiMarek Szymonski

Abstract

Controlling the strength of the coupling between organic molecules and single atoms provides a powerful tool for tuning electronic properties of single-molecule devices. Here, using scanning tunneling microscopy and spectroscopy (STM/STS) supported by theoretical modeling, we study the interaction of a planar organic molecule (trinaphthylene) with a hydrogen-passivated Ge(001):H substrate and a single dangling bond quantum dot on that surface. The electronic structure of the molecule adsorbed on the hydrogen-passivated surface is similar to the gas phase structure and the measurements show that HOMO and LUMO states contribute to the STM filled and empty state images, respectively. Furthermore, we show that the electronic properties are not significantly affected when the molecule is attached to the single dangling bond, which is in contrast with the strong interaction of the molecule with a dangling bond dimer. Our results show that the dangling bond quantum dots could stabilize organic molecules on a hydrogenated semiconductor without affecting their originally designed gas phase electronic properties. Together with the ability to laterally manipulate the molecules on the surface, this will be advantageous in the construction ...Continue Reading

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Citations

Aug 10, 2016·ACS Nano·Szymon GodlewskiMark Saeys
Oct 7, 2016·Journal of Chemical Theory and Computation·Matteo BarboriniStefano Corni
Apr 13, 2018·Physical Chemistry Chemical Physics : PCCP·Szymon GodlewskiDolores Pérez
Jun 9, 2016·Physical Chemistry Chemical Physics : PCCP·Szymon GodlewskiMark Saeys
May 24, 2018·Angewandte Chemie·Rafal ZuzakAntonio M Echavarren
Jun 26, 2018·Nanoscale·Frank EisenhutGianaurelio Cuniberti
Mar 23, 2021·Beilstein Journal of Nanotechnology·Rafal ZuzakSzymon Godlewski
Aug 18, 2017·ACS Nano·Rafal ZuzakSzymon Godlewski

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