Publication
856
ChemElectroChem, 5 (136), 1625-1630, 2018
DOI:10.1002/celc.2018004180
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Introducing Molecular Functionalities within High Surface Area Nanostructured ITO Electrodes through Diazonium Electrografting
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Yee-Seul Kim, Sophie Fournier, Stéphanie Lau-Truong, Philippe Decorse, Charles H. Devillers, Dominique Lucas, Kenneth D. Harris, Benoît Limoges, and Véronique Balland
Laboratoire d’Electrochimie Moléculaire, Unité Mixte de Recherche Université − CNRS No 7591, Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier, 15 rue Jean de Baïf, 75205 Paris Cedex 13, France
UCMUB UMR 6302, CNRS Université Bourgogne Franche Comté F-21000 Dijon, France
NRC Nanotechnology Research Center Edmonton Alberta T6G 2M9, Canada & Department of Mechanical Engineering University of Alberta Edmonton Alberta T6G 2V4, Canada
Efficient and homogeneous functionalization of 3D nanostructured transparent ITO electrodes was reproducibly achieved by electrochemical reduction of in‐situ generated free‐base porphyrin diazonium salts. The resulting modified electrodes were characterized by cyclic voltammetry and voltabsorptometry, UV‐visible absorption, resonance Raman and XPS. The overall results strongly support the formation of covalently linked electroactive porphyrin oligomers on the ITO surface, that are highly stable towards desorption or hydrolysis in organic as well as mild hydrolytic conditions. Further metalation by zinc ions was quantitatively achieved, thus opening new opportunities for the preparation of robust high‐surface area photoelectrodes with adjustable properties. |
