resumo
We report a new approach for the synthesis of multifunctional Au core@Prussian Blue analogous (PBA) shell nanoheterostructures that involves PBA shell growth on the surface of cyanide-stabilized gold nanoparticles. It permits the assembly of Au@KNiII[FeII(CN)(6)] core@shell and Au@KNiII[Fe-II(CN)(6)]@KNiII[Cr-III(CN)(6)] core@shell@shell heterostructures with well-defined and size-controlled gold cores and PBA shells. These heterostructures exhibit tunable size- and shape-dependent magnetic and optical properties: (i) the surface plasmon resonance band position and intensity mainly depend on the PBA shell thickness, and (ii) the magnetic properties (the transition temperature, the coercivity, and magnetic regime) depend in a complex manner on the thickness as well as the particular morphology of the magnetic shell.
palavras-chave
METAL-ORGANIC FRAMEWORKS; COATED GOLD NANOPARTICLES; COORDINATION POLYMER CRYSTALS; PHOTOINDUCED MAGNETISM; HYDROGEN-PEROXIDE; GENERAL-APPROACH; HETEROSTRUCTURES; NANOCRYSTALS; GROWTH; NANOSTRUCTURES
categoria
Chemistry
autores
Maurin-Pasturel, G; Long, J; Palacios, MA; Guerin, C; Charnay, C; Willinger, MG; Trifonov, AA; Larionova, J; Guari, Y
nossos autores
Guillaume Jean-Pierre Maurin-Pasturel
Bolseiro de pós-DoutoramentoGrupos
agradecimentos
The authors thank the University of Montpellier, CNRS, and the ERANet. RUSPlus-181 Nanochains project for financial support. We also thank C. Rebeil and D. Granier (PAC Chimie Balard, ICGM, Montpellier) for magnetic and XRPD measurements.