Elaboration of hybrid silica particles using a diazonium salt chemistry approach

Autor:	Philippe Decorse, Houcine Benmehdi, Aazdine Lamouri, Nébéwia Griffete, Randa Ahmad, Claire Mangeney
Rok vydání:	2013
Předmět:	chemistry.chemical_classification Materials science Inorganic chemistry Polymer chemistry.chemical_compound Colloid Colloid and Surface Chemistry chemistry Covalent bond Surface modification Hybrid material Iron oxide nanoparticles Hydrophobic silica Acrylic acid
Zdroj:	Colloids and Surfaces A: Physicochemical and Engineering Aspects. 439:145-150
ISSN:	0927-7757
DOI:	10.1016/j.colsurfa.2013.03.071
Popis:	We demonstrate that the reaction of diazonium salts with silica particles in basic media can provide reactive surface functionalities which are able: (i) to initiate the growth of polymers and (ii) to immobilize iron oxide nanoparticles at the surface of silica particles. Using this strategy, we synthesized hybrid >silica core@poly(acrylic acid) shell particles and magnetic hybrid materials composed of silica cores surrounded by a dense covalent attachment of magnetic iron oxide nanoparticles and polyethyleneglycol chains. Advantages of this functionalization approach rely not only on the simplicity, rapidity and efficiency of the procedure but also on the formation of strong silica aryl surface bonds, highly suitable for a wide variety of potential applications in colloid and surface science and technology.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b93566ba740e38068aeeb2f1a82cc71c https://doi.org/10.1016/j.colsurfa.2013.03.071 Zobrazit plný text záznamu Full Text from ScienceDirect