The Use of Cyclic Voltammetry To Probe the Passivation of Electrode Surfaces by Well-Ordered Self-Assembly and Langmuir–Blodgett Films. An Advanced Undergraduate Laboratory Experiment in Surface Science and Nanomaterials Chemistry

• Autores: Pilar Cea Mingueza, María C. López, Santiago Martín, Ana Villares, Gorka Pera, Ignacio Giner
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 86, Nº 6 (June), 2009, págs. 723-725
• Idioma: inglés
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• Resumen

  • An advanced undergraduate laboratory experiment is described in which the students use cyclic voltammetry (CV) as an electrochemical tool to probe the passivation of electrode surfaces covered by well-ordered self-assembly and Langmuir–Blodgett films. This set of experiments is intended to (i) serve as an introduction to the bottom-up strategies for the fabrication of well-ordered thin solid films; (ii) illustrate the passivation effect of well-ordered films deposited on electrodes; (iii) analyze the blocking behavior of the films using a redox probe and CV; and (iv) allow the students to perform a comparison study of physically and chemically attached films on electrodes.