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  Molecules with multiple switching units on a Au(111) surface: self-organization and single-molecule manipulation

Mielke, J., Selvanathan, S., Peters, M., Schwarz, J., Hecht, S., & Grill, L. (2012). Molecules with multiple switching units on a Au(111) surface: self-organization and single-molecule manipulation. Journal of Physics: Condensed Matter, 24(39): 394013. doi:10.1088/0953-8984/24/39/394013.

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Mielke, Johannes1, 2, Autor           
Selvanathan, Sofia2, Autor
Peters , Maike3, Autor
Schwarz, Jutta 3, Autor
Hecht , Stefan 3, Autor
Grill, Leonhard1, 2, Autor           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Physics Department, Free University Berlin, D-14195 Berlin, Germany , ou_persistent22              
3Department of Chemistry, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany , ou_persistent22              

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 Zusammenfassung: Three different molecules, each containing two azobenzene switching units, were synthesized, successfully deposited onto a Au(111) surface by sublimation and studied by scanning tunneling microscopy at low temperatures. To investigate the influence of electronic coupling between the switching units as well as to the surface, the two azo moieties were connected either via π-conjugated para-phenylene or decoupling meta-phenylene bridges, and the number of tert-butyl groups was varied in the meta-phenylene-linked derivatives. Single molecules were found to be intact after deposition as identified by their characteristic appearance in STM images. Due to their mobility on the Au(111) surface at room temperature, the molecules spontaneously formed self-organized molecular arrangements that reflected their chemical structure. While lateral displacement of the molecules was accomplished by manipulation, trans–cis isomerization processes, typical for azobenzene switches, could not be induced.

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Sprache(n): eng - English
 Datum: 2012-02-082011-12-232012-09-112012-10-03
 Publikationsstatus: Erschienen
 Seiten: 6
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1088/0953-8984/24/39/394013
 Art des Abschluß: -

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Titel: Journal of Physics: Condensed Matter
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bristol, UK : IOP Pub.
Seiten: - Band / Heft: 24 (39) Artikelnummer: 394013 Start- / Endseite: - Identifikator: ISSN: 0953-8984
CoNE: https://pure.mpg.de/cone/journals/resource/954928562478