Molecular Sieving and Current Rectification Properties of Thin Organic Films

Abstract : For the purpose of preparing well-organized functional surfaces, carbon and gold substrates were modified using electroreduction of a tetrahedral-shape preorganized tetra-aryldiazonium salt, leading to the deposition of ultrathin organic films. Characterization of the modified surfaces has been performed using cyclic voltammetry, X-ray photoelectron spectroscopy, infrared absorption spectroscopy, ellipsometry, atomic force microscopy, and contact angle measurements. The specific design of the tetra-aryldiazonium salts leads to an intrinsic structuring of the resulting organic films, allowing molecular sieving and current rectification properties toward redox probes in solution.
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Yara Aceta, Jean-François Bergamini, Corinne Lagrost, Philippe Hapiot, Yann R. Leroux. Molecular Sieving and Current Rectification Properties of Thin Organic Films. Langmuir, American Chemical Society, 2018, 34 (7), pp.2410-2419. ⟨10.1021/acs.langmuir.7b03518⟩. ⟨hal-01737384⟩

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