Domain and Molecular Superlattice Structure of Dodecanethiol Self-Assembled on Au(111)
1994; Institute of Physics; Volume: 27; Issue: 5 Linguagem: Inglês
10.1209/0295-5075/27/5/006
ISSN1286-4854
AutoresDario Anselmetti, A. Baratoff, H.‐J. Güntherodt, Emmanuel Delamarche, Bruno Michel, Ch. Gerber, Hye Won Kang, Heiko Wolf, Helmut Ringsdorf,
Tópico(s)Advanced Chemical Physics Studies
ResumoAnnealed organic monolayers of dodecanethiol (CH3(CH2)11SH) self-assembled on Au(111) have been investigated by scanning tunnelling microscopy. By using very high tunnelling resistances (TΩ) we find evidence of well-ordered molecular domains at room temperature and observe two different types of c(4 × 2) superlattice structures with the same rectangular unit cell. In contrast to theoretical calculations each unit cell contains four inequivalent molecules. Possible reasons for this discrepancy are discussed.
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