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Cover Picture: A Molecular Approach to Self‐Assembly of Trimethylsilylacetylene Derivatives on Gold (Chem. Eur. J. 11/2003)
Author(s) -
Katsonis Nathalie,
Marchenko Alexandr,
Taillemite Sébastien,
Fichou Denis,
Chouraqui Gaëlle,
Aubert Corinne,
Malacria Max
Publication year - 2003
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200390223
Subject(s) - monolayer , moiety , chemistry , molecule , crystallography , self assembly , triple bond , nanotechnology , stereochemistry , materials science , double bond , polymer chemistry , organic chemistry
The cover picture shows a 3D STM image (40×40 Å 2 ) of a self‐assembled monolayer formed by a linear polyunsaturated trimethylsilyl‐acetylene (TMSA) derivative on a reconstructed gold (111) surface. Molecular resolution reveals that the TMSA molecules stand upright with the TMSA heads in contact with gold (each white‐topped bump of the STM image corresponds to a single TMSA molecule). Our molecular approach demonstrates the key role played by the TMSA head in self‐assembly, its origin being twofold: 1) the TMSA overlayers are commensurate to the Au (111) adlattice along the 〈112〉 direction, and 2) the CC triple bond of the TMSA moiety activates the Si atom and induces the creation of a surface complex through a SiAu chemical bond. Long‐range and highly stable TMSA self‐assemblies constitute an alternative to well‐known alkanethiols and appear to be promising materials for applications in surface modifications. More details are given by Fichou et al. on pp. 2574 ff.