Vol. 43 No. 1 (2026), Original Articles
Vol. 43 No. 1 (2026)

Adsorption of Piperazine-dithiocarbamate on Au(111): An electrochemical Scanning Tunneling Microscopy Study

Original Articles
Published 2026-07-15
M. P. Hernández
Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, La Habana, Cuba
https://orcid.org/0000-0003-4055-6401
J. A. Martínez
Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, Cuba
https://orcid.org/0000-0003-0257-4721
G. Navarro-Marín
Department of Physics, University of Basel, Switzerland
https://orcid.org/0000-0002-4931-3695
J. Valenzuela
Centro de Nanociencias y Nanotecnología (CNyN), Universidad Nacional Autónoma de México (UNAM), Ensenada, BC, Mexico
J. A. Herrera
Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, La Habana, Cuba
https://orcid.org/0000-0003-2244-7180
M. H. Farías
Centro de Nanociencias y Nanotecnología (CNyN), Universidad Nacional Autónoma de México (UNAM), Ensenada, BC, Mexico
https://orcid.org/0000-0002-6726-3804
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Keywords

Thin films
scanning tunneling microscopy
electrochemistry
microscopy of surfaces
interfaces

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(1)
Adsorption of Piperazine-Dithiocarbamate on Au(111): An Electrochemical Scanning Tunneling Microscopy Study. Rev. Cubana Fis. 2026, 43 (1), 25-31.
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Abstract

The adsorption process of piperazine-dithiocarbamate potassium salt, which occurs on the Au(111) surface, was studied by using electrochemical scanning tunneling microscopy. Perchloric acid and sodium hydroxide were used as electrolytes. The results revealed that, depending on the applied potential and the nature of the electrolyte, the entire molecule or just individual sulfur atoms were adsorbed forming different sulfur phases, instead of the entire molecule.

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