Network of tris(porphyrinato)cerium(III) arranged on the herringbone structure of an Au(111) surface

Hiroyuki Tanaka, Tomohiro Ikeda, Kousei Yamashita, Masayuki Takeuchi, Seiji Shinkai, Tomoji Kawai

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Abstract

A network of bithiophene-modified tris(porphyrinato)cerium(III) triple-decker (TD) complexes was formed by pulse injection depositing on the Au(IIl) surface. The structure was observed with ultrahigh vacuum scanning tunneling microscopy (UHV-STM). High resolution UHV-STM images revealed the details of network structure of TD and the internal structure of both bithiophene and porphyrin moieties, indicating that the TD complexes undergo face-on adsorption. The alkyl chains on these bithiophenes not only make the TD molecules soluble in organic solvents, but also play a key role in preventing them from forming bonds between the thiophenes and the Au substrate, which enables the porphyrin molecular surface to be perpendicular to the substrate. These results suggest that the thiophene moiety can be used to control the adsorption and assembly of molecules on the herringbone structure of the Au(111) surface.

Original languageEnglish
Pages (from-to)210-214
Number of pages5
JournalLangmuir
Volume26
Issue number1
DOIs
Publication statusPublished - Jan 5 2010

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Tanaka, H., Ikeda, T., Yamashita, K., Takeuchi, M., Shinkai, S., & Kawai, T. (2010). Network of tris(porphyrinato)cerium(III) arranged on the herringbone structure of an Au(111) surface. Langmuir, 26(1), 210-214. https://doi.org/10.1021/la902019s