Visualizing the Role of Molecular Orbitals in Charge Transport through Individual Diarylethene Isomers

Reecht, Gaël; Lotze, Christian; Sysoiev, Dmytro; Huhn, Thomas; Franke, Katharina J.

Visualizing the Role of Molecular Orbitals in Charge Transport through Individual Diarylethene Isomers

Dateien

Reecht_0-383735.pdfGröße: 5.19 MBDownloads: 674

Datum

2016

Autor:innen

Reecht, Gaël

Lotze, Christian

Sysoiev, Dmytro

Huhn, Thomas

Franke, Katharina J.

Open Access-Veröffentlichung

Open Access Hybrid

Sammlungen

Chemie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

ACS Nano. 2016, 10(11), pp. 10555-10562. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/acsnano.6b06559

Zusammenfassung

Diarylethene molecules are prototype molecular switches with their two isomeric forms exhibiting strikingly different conductance, while maintaining similar length. We employed low-temperature scanning tunneling microscopy (STM) to resolve the energy and the spatial extend of the molecular orbitals of the open and closed isomers when lying on a Au(111) surface. We find an intriguing difference in the extension of the respective HOMOs and a peculiar energy splitting of the formerly degenerate LUMO of the open isomer. We then lift the two isomers with the tip of the STM and measure the current through the individual molecules. By a simple analytical model of the transport, we show that the previously determined orbital characteristics are essential ingredients for the complete understanding of the transport properties. We also succeeded in switching the suspended molecules by the current, while switching the ones which are in direct contact to the surface occurs nonlocally with the help of the electric field of the tip.

Fachgebiet (DDC)

540 Chemie

Schlagwörter

charge transport; diarylethene; molecular switch; scanning tunneling microscopy; scanning tunneling spectroscopy

Zitieren

ISO 690

REECHT, Gaël, Christian LOTZE, Dmytro SYSOIEV, Thomas HUHN, Katharina J. FRANKE, 2016. Visualizing the Role of Molecular Orbitals in Charge Transport through Individual Diarylethene Isomers. In: ACS Nano. 2016, 10(11), pp. 10555-10562. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/acsnano.6b06559

BibTex

@article{Reecht2016-11-22Visua-36835,
  year={2016},
  doi={10.1021/acsnano.6b06559},
  title={Visualizing the Role of Molecular Orbitals in Charge Transport through Individual Diarylethene Isomers},
  number={11},
  volume={10},
  issn={1936-0851},
  journal={ACS Nano},
  pages={10555--10562},
  author={Reecht, Gaël and Lotze, Christian and Sysoiev, Dmytro and Huhn, Thomas and Franke, Katharina J.}
}

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