Green synthesis of sacrificial UV-sensitive core and biobased shell for obtaining optically hollow nanoparticles.
| Autor: | Saulais M; Univ. Grenoble Alpes, CNRS, Grenoble-INP, LGP2, F-38000 Grenoble, France., Salem S; Univ. Grenoble Alpes, CNRS, Grenoble-INP, LGP2, F-38000 Grenoble, France., Sillard C; Univ. Grenoble Alpes, CNRS, Grenoble-INP, LGP2, F-38000 Grenoble, France. Electronic address: cecile.sillard@grenoble-inp.fr., Choisy P; LVMH Recherche, F-45800 Saint-Jean-de-Braye, France., Dufresne A; Univ. Grenoble Alpes, CNRS, Grenoble-INP, LGP2, F-38000 Grenoble, France. Electronic address: alain.dufresne@pagora.grenoble-inp.fr. |
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| Jazyk: | angličtina |
| Zdroj: | Journal of colloid and interface science [J Colloid Interface Sci] 2025 Jan 15; Vol. 678 (Pt B), pp. 971-983. Date of Electronic Publication: 2024 Sep 03. |
| DOI: | 10.1016/j.jcis.2024.08.260 |
| Abstrakt: | Hollow nanoparticles have been extensively studied in recent years. Obtaining such structures with biobased materials, following greener synthetic routes, is still challenging, especially if accurate particle dimensions are required. This work reports the use of an innovative hybrid silica core (Si@azo) containing UV-sensitive molecule, wrapped in biobased multilayer shell composed of polysaccharides. It is a promising strategy for obtaining optically hollow nanoparticles. Indeed, Si@azo cores have the ability to be partially degraded when irradiated with UV light. Combined with a well-controlled and monodisperse diameter, they provide a good basis for layer-by-layer assembly, leading to a multilayer shell with controlled composition and thickness. Finally, UV irradiation of such a core-shell structure is harmless to the polysaccharide shell, but does impact the hybrid silica core, as revealed by turbidity measurements, among other. Each step, i.e. core synthesis, shell addition, and core-shell irradiation, has been carefully characterized at the macro (Fourier-transform infrared spectroscopy - FTIR, Dynamic Light Scattering - DLS, Zeta-potential measurement, Surface Plasmon Resonance - SPR, turbidity) and microscale (Transmission and Scanning Electron Microscopies). Emphasis is put on how turbidity measurements can be related to the core refractive index (n Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Marlene Saulais reports financial support was provided by Private compagny. Patrick Choisy reports financial support was provided by Private compagny. Marlene Saulais reports a relationship with Private company that includes: employment. Patrick Choisy reports a relationship with Private company that includes: employment. Marlene Saulais has patent pending to 22 07395. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.) |
| Databáze: | MEDLINE |
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