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    Fabrication of highly ordered Cu2+/Fe3+ decorated polyhedral oligomeric silsesquioxane hybrids: How metal coordination influences structure

    Year: 2020

    Journal: J. Colloid Interface Sci., Volume 572, JUL 15, page 207–215

    Authors: Potsi, G; Wu, JQ; Portale, G; Gengler, RYN; Longo, A; Gournis, D; Rudolf, P

    Organizations: Ubbo Emmius Fund of the University of Groningen; China Scholarship Council (CSC)China Scholarship Council

    Keywords: Langmuir Schaefer films; Silsesquioxanes; Metal complexes

    Incorporation of isolated metal centers into well-organized nanostructures is a promising route in the development of the next generation of chemical, magnetic and electronic devices. In this work, a layer-by-layer protocol to grow highly ordered thin films of metal-decorated organic-inorganic cage-like polyhedral oligomeric silsesquioxane (POSS) is introduced. The key strategy is to use metal ions (Cu(2+)or Fe3+) as linker for the amino-functionalized cage-like POSS, which are self-assembled between arachidic acid layers during Langmuir-Schaefer deposition. The Langmuir-Schaefer films are examined by X-ray photoelectron spectroscopy, X-ray diffraction, grazing incidence wide-angle X-ray scattering and extended X-ray absorption fine structure in order to understand how the coordination of metal ions influences the structure in the course of the layer-by-layer formation of the films. (C) 2020 The Authors. Published by Elsevier Inc.
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