Abstract
Tuning the architecture of multilayer nanostructures by exploiting the properties of their constituents is a versatile way to develop multifunctional films. Herein, we report a bottom-up approach for the fabrication of highly ordered hybrid films consisting of dimethyldioctadecylammonium (DODA), iron decorated polyhedral oligomeric silsesquioxanes (POSS), and montmorillonite clay platelets. Clay platelets provided the template where Fe/POSS moieties were grafted by the use of the surfactant. Driven by the iron ions present, DODA adopted a staggered arrangement, which is essential to realize the controllable layer-by-layer growth of the film. The elemental composition of the film was studied by X-ray photoelectron spectroscopy and X-ray reflectivity confirmed the existence of smooth interfaces between the different layers.
Highlights
Self-assembly provides the opportunity to create multifunctional hybrid materials from organic and inorganic building blocks [1]
1 and during the deposition process illustrated in Scheme results are shown in Figure and testify testify to the successful of the DODA-clay the substrate is horizontally dipped to the successful transfertransfer of the DODA-clay layer. layer
We demonstrated the successful insertion of iron decorated organic-inorganic polyhedral
Summary
Self-assembly provides the opportunity to create multifunctional hybrid materials from organic and inorganic building blocks [1]. Self-assembly at surfaces can be exploited to build supramolecular architectures suitable for applications such as medical devices and catalyst supports, for many of which ordered thin films are required [2,3,4,5,6,7,8]. Our focus here is to synthesize new organic-inorganic hybrid materials by insertion of metal-decorated (Fe) polyhedral oligomeric silsesquioxane (POSS) between clay platelets through a modified LS method that alternates transfer of the Langmuir film and self-assembly. POSS have attracted significant attention because they can be used as templates for fabricating nanostructured materials such as star polymers [14,15,16], catalysts [17,18], and dendrimers [19]. POSS are made of a core-shell three-dimensional (3D) cage-like structure that can be fabricated through hydrolytic condensation reactions of organosilicon monomers
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