Electrodeposition of dihydroxypyridine-based films: Strong influence of the used isomer on the film structure

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-03-24 DOI:10.1016/j.colsurfa.2025.136743

Kevin Ziegler , Dris Ihiawakrim , Ovidiu Ersen , Elisa Maillard , Leon Prädel , Christopher V. Synatscke , Tanja Weil , Cédric Boissière , Clément Sanchez , Youri Arntz , Vincent Ball

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Abstract

The electrodeposition of different isomers of dihydroxypyridine (DHP) from sodium acetate buffer at pH = 5 was undertaken on amorphous carbon and gold working electrodes using cyclic voltammetry and chronoamperometry. It was found that films can be formed from 2,3-DHP, 2,5-DHP, and 2,6-DHP (about 20 nm thick after 5 potential cycles in CV experiments) but those coatings display different surface properties as their wettability and roughness despite similar chemical composition. In addition, the films prepared at small potential sweep rates from 2,3-DHP and 2,5-DHP contain crystalline domains as inferred from high resolution transmission electron microscopy and selected area electron diffraction. As an isomer-independent property, the films made from 2,3-DHP, 2,5-DHP, and 2,6-DHP all display an anti-oxidant behavior. This study shows that it is possible to easily tune the structure and properties of DHP-based electropolymerized films, the films made from 2,5-DHP being the most promising for future applications.

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.