Light-Induced Switching of Tunable Single-Molecule Junctions

Handle URI:
http://hdl.handle.net/10754/550422
Title:
Light-Induced Switching of Tunable Single-Molecule Junctions
Authors:
Sendler, Torsten; Luka-Guth, Katharina; Wieser, Matthias; Lokamani; Wolf, Jannic Sebastian; Helm, Manfred; Gemming, Sibylle; Kerbusch, Jochen; Scheer, Elke; Huhn, Thomas; Erbe, Artur
Abstract:
A major goal of molecular electronics is the development and implementation of devices such as single-molecular switches. Here, measurements are presented that show the controlled in situ switching of diarylethene molecules from their nonconductive to conductive state in contact to gold nanoelectrodes via controlled light irradiation. Both the conductance and the quantum yield for switching of these molecules are within a range making the molecules suitable for actual devices. The conductance of the molecular junctions in the opened and closed states is characterized and the molecular level E 0, which dominates the current transport in the closed state, and its level broadening Γ are identified. The obtained results show a clear light-induced ring forming isomerization of the single-molecule junctions. Electron withdrawing side-groups lead to a reduction of conductance, but do not influence the efficiency of the switching mechanism. Quantum chemical calculations of the light-induced switching processes correlate these observations with the fundamentally different low-lying electronic states of the opened and closed forms and their comparably small modification by electron-withdrawing substituents. This full characterization of a molecular switch operated in a molecular junction is an important step toward the development of real molecular electronics devices.
KAUST Department:
Solar and Photovoltaic Engineering Research Center
Citation:
Light-Induced Switching of Tunable Single-Molecule Junctions 2015:n/a Advanced Science
Publisher:
Wiley-Blackwell
Journal:
Advanced Science
Issue Date:
16-Apr-2015
DOI:
10.1002/advs.201500017
Type:
Article
ISSN:
21983844
Additional Links:
http://doi.wiley.com/10.1002/advs.201500017
Appears in Collections:
Articles; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorSendler, Torstenen
dc.contributor.authorLuka-Guth, Katharinaen
dc.contributor.authorWieser, Matthiasen
dc.contributor.authorLokamanien
dc.contributor.authorWolf, Jannic Sebastianen
dc.contributor.authorHelm, Manfreden
dc.contributor.authorGemming, Sibylleen
dc.contributor.authorKerbusch, Jochenen
dc.contributor.authorScheer, Elkeen
dc.contributor.authorHuhn, Thomasen
dc.contributor.authorErbe, Arturen
dc.date.accessioned2015-04-21T14:15:17Zen
dc.date.available2015-04-21T14:15:17Zen
dc.date.issued2015-04-16en
dc.identifier.citationLight-Induced Switching of Tunable Single-Molecule Junctions 2015:n/a Advanced Scienceen
dc.identifier.issn21983844en
dc.identifier.doi10.1002/advs.201500017en
dc.identifier.urihttp://hdl.handle.net/10754/550422en
dc.description.abstractA major goal of molecular electronics is the development and implementation of devices such as single-molecular switches. Here, measurements are presented that show the controlled in situ switching of diarylethene molecules from their nonconductive to conductive state in contact to gold nanoelectrodes via controlled light irradiation. Both the conductance and the quantum yield for switching of these molecules are within a range making the molecules suitable for actual devices. The conductance of the molecular junctions in the opened and closed states is characterized and the molecular level E 0, which dominates the current transport in the closed state, and its level broadening Γ are identified. The obtained results show a clear light-induced ring forming isomerization of the single-molecule junctions. Electron withdrawing side-groups lead to a reduction of conductance, but do not influence the efficiency of the switching mechanism. Quantum chemical calculations of the light-induced switching processes correlate these observations with the fundamentally different low-lying electronic states of the opened and closed forms and their comparably small modification by electron-withdrawing substituents. This full characterization of a molecular switch operated in a molecular junction is an important step toward the development of real molecular electronics devices.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/advs.201500017en
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.http://creativecommons.org/licenses/by/4.0/en
dc.subjectdiarylethenesen
dc.subjectin situ switchingen
dc.subjectmolecular electronicsen
dc.subjectphotochromismen
dc.subjectsingle-molecule junctionsen
dc.titleLight-Induced Switching of Tunable Single-Molecule Junctionsen
dc.typeArticleen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Centeren
dc.identifier.journalAdvanced Scienceen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionHelmholtz-Zentrum Dresden - Rossendorf; Bautzner Landstraße 400 01328 Dresden Germanyen
dc.contributor.institutionDepartment of Physics; Universität Konstanz; 78457 Konstanz Germanyen
dc.contributor.institutionHelmholtz-Zentrum Dresden - Rossendorf; Bautzner Landstraße 400 01328 Dresden Germanyen
dc.contributor.institutionInstitute for Materials Science and Max Bergmann Center of Biomaterials Dresden; Technische Universität Dresden; 01062 Dresden Germanyen
dc.contributor.institutionFachbereich Chemie; Universität Konstanz; 78457 Konstanz Germanyen
dc.contributor.institutionHelmholtz-Zentrum Dresden - Rossendorf; Bautzner Landstraße 400 01328 Dresden Germanyen
dc.contributor.institutionHelmholtz-Zentrum Dresden - Rossendorf; Bautzner Landstraße 400 01328 Dresden Germanyen
dc.contributor.institutionHelmholtz-Zentrum Dresden - Rossendorf; Bautzner Landstraße 400 01328 Dresden Germanyen
dc.contributor.institutionDepartment of Physics; Universität Konstanz; 78457 Konstanz Germanyen
dc.contributor.institutionFachbereich Chemie; Universität Konstanz; 78457 Konstanz Germanyen
dc.contributor.institutionHelmholtz-Zentrum Dresden - Rossendorf; Bautzner Landstraße 400 01328 Dresden Germanyen
dc.contributor.institutionCenter for Advancing Electronics Dresden, Technische Universität Dresden, Dresden, Germanyen
dc.contributor.institutionFaculty of Science, Technische Universität Chemnitz, Chemnitz, Germanyen
kaust.authorWolf, Jannic Sebastianen
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