Ordered structures of two sulfur containing donor molecules on the Au(111) surface

We report experiments by low energy electron diffraction (LEED) and scanning tunneling microscopy (STM) on ordered structures of two sulfur-containing π-conjugated molecules on the Au(111)-surface, namely tetrabenzothianthrene (TBTA) and tetrathiotetracene (TTT). These molecules are candidates for d...

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Bibliographic Details
Published inSurface science Vol. 606; no. 23-24; pp. 1855 - 1863
Main Authors Fiedler, Benjamin, Rojo-Wiechel, Elena, Klassen, Johann, Simon, Julia, Beck, Johannes, Sokolowski, Moritz
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier B.V 01.12.2012
Elsevier
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Summary:We report experiments by low energy electron diffraction (LEED) and scanning tunneling microscopy (STM) on ordered structures of two sulfur-containing π-conjugated molecules on the Au(111)-surface, namely tetrabenzothianthrene (TBTA) and tetrathiotetracene (TTT). These molecules are candidates for donors in charge transfer salts. On Au(111) both molecules form long-range ordered structures that are commensurate to the top-most surface layer. For TBTA, the reconstruction of the Au(111) surface is maintained, whereas it is lifted by TTT. Both molecules lie flat on the surface. For TBTA, the structure indicates that the molecule is planarized upon adsorption. ► Tetrabenzothianthrene and tetrathiotetracene form long-range ordered commensurate structures on the Au(111) surface ► For TBTA, the reconstruction of the Au(111) surface is maintained. ► The reconstruction is lifted by TTT. ► Both molecules adsorb intact and in a planar configuration. ► For TBTA, the structure indicates that the molecule is planarized upon adsorption.
ISSN:0039-6028
1879-2758
DOI:10.1016/j.susc.2012.07.031