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Godlewski S, Kawai H, Kolmer M, et al. Single-Molecule Rotational Switch on a Dangling Bond Dimer Bearing. ACS Nano. 2016;10(9):8499-507doi: 10.1021/acsnano.6b03590.
Godlewski, S., Kawai, H., Kolmer, M., Zuzak, R., Echavarren, A. M., Joachim, C., Szymonski, M., & Saeys, M. (2016). Single-Molecule Rotational Switch on a Dangling Bond Dimer Bearing. ACS nano, 10(9), 8499-507. https://doi.org/10.1021/acsnano.6b03590
Godlewski, Szymon, et al. "Single-Molecule Rotational Switch on a Dangling Bond Dimer Bearing." ACS nano vol. 10,9 (2016): 8499-507. doi: https://doi.org/10.1021/acsnano.6b03590
Godlewski S, Kawai H, Kolmer M, Zuzak R, Echavarren AM, Joachim C, Szymonski M, Saeys M. Single-Molecule Rotational Switch on a Dangling Bond Dimer Bearing. ACS Nano. 2016 Sep 27;10(9):8499-507. doi: 10.1021/acsnano.6b03590. Epub 2016 Aug 16. PMID: 27504525.
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ACS Nano. 2016 Sep 27;10(9):8499-507. doi: 10.1021/acsnano.6b03590. Epub 2016 Aug 16.

Single-Molecule Rotational Switch on a Dangling Bond Dimer Bearing.

ACS nano

Szymon Godlewski, Hiroyo Kawai, Marek Kolmer, Rafał Zuzak, Antonio M Echavarren, Christian Joachim, Marek Szymonski, Mark Saeys

Affiliations

  1. Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University , ?ojasiewicza 11, PL 30-348 Krakow, Poland.
  2. Institute of Materials Research and Engineering , 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634.
  3. Institute of Chemical Research of Catalonia (ICIQ) , Av. Països Catalans 16, 43007 Tarragona, Spain.
  4. Nanosciences Group & MANA Satellite, CEMES-CNRS, 29 rue Jeanne Marvig, F-31055 Toulouse, France & International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
  5. Laboratory for Chemical Technology, Ghent University , Technologiepark 914, 9052 Ghent, Belgium.

PMID: 27504525 DOI: 10.1021/acsnano.6b03590

Abstract

One of the key challenges in the construction of atomic-scale circuits and molecular machines is to design molecular rotors and switches by controlling the linear or rotational movement of a molecule while preserving its intrinsic electronic properties. Here, we demonstrate both the continuous rotational switching and the controlled step-by-step single switching of a trinaphthylene molecule adsorbed on a dangling bond dimer created on a hydrogen-passivated Ge(001):H surface. The molecular switch is on-surface assembled when the covalent bonds between the molecule and the dangling bond dimer are controllably broken, and the molecule is attached to the dimer by long-range van der Waals interactions. In this configuration, the molecule retains its intrinsic electronic properties, as confirmed by combined scanning tunneling microscopy/spectroscopy (STM/STS) measurements, density functional theory calculations, and advanced STM image calculations. Continuous switching of the molecule is initiated by vibronic excitations when the electrons are tunneling through the lowest unoccupied molecular orbital state of the molecule. The switching path is a combination of a sliding and rotation motion over the dangling bond dimer pivot. By carefully selecting the STM conditions, control over discrete single switching events is also achieved. Combined with the ability to create dangling bond dimers with atomic precision, the controlled rotational molecular switch is expected to be a crucial building block for more complex surface atomic-scale devices.

Keywords: hydrogenated semiconductor surface; molecular rotor; molecular switch; organic molecule; scanning tunneling microscope; single-molecule devices; single-molecule manipulation; surface dangling bonds

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