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Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites
Published on: June 14, 2024
Unprecedented Self-Organized Monolayer of a Ru(II) Complex by Diazonium Electroreduction
Van Quynh Nguyen1,2, Xiaonan Sun1, Frédéric Lafolet1,3
1Univ. Paris Diderot , Sorbonne Paris Cité, ITODyS, UMR 7086 CNRS-15, rue Jean-Antoine de Baïf, 75205 Paris Cedex 13, France.
Abstract:
A new heteroleptic polypyridyle Ru(II) complex was synthesized and deposited on surface by the diazonium electroreduction process. It yields to the covalent grafting of a monolayer. The functionalized surface was characterized by XPS, electrochemistry, AFM, and STM. A precise organization of the molecules within the monolayer is observed with parallel linear stripes separated by a distance of 3.8 nm corresponding to the lateral size of the molecule. Such organization suggests a strong cooperative process in the deposition process. This strategy is an original way to obtain well-controlled and stable functionalized surfaces for potential applications related to the photophysical properties of the grafted chromophore. As an exciting result, it is the first example of a self-organized monolayer (SOM) obtained using diazonium electroreduction.
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