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Characterization of self-assembled monolayers of thiols on gold using scanning tunneling microscopy

Ferreira, Q. ; Alcácer, L. ; Morgado, J.

Characterization of self-assembled monolayers of thiols on gold using scanning tunneling microscopy, Proc Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. 1, pp. 149 - 152, May, 2009.

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Abstract
The formation and the structure at the molecular
level of self-assembled monolayers of thiophenol and
dodecanethiol molecules on gold surfaces were characterized by scanning tunneling microscopy. Highly ordered monolayer films were obtained for both thiols. The results suggest that the molecular ordering and packing depend on the adsorption time and on the solvent dipole moment. Longer adsorption times and
polar solvents favor the saturation of surface coverage and molecular disorder.