Engineered Au Core@Prussian Blue Analogous Shell Nanoheterostructures: Their 
Magnetic and Optical Properties

Maurin‐Pasturel, Guillaume; Long, Jérôme; Palacios, Maria A.; Guérin, Christian; Charnay, Clarence; Willinger, Marc Georg; Trifonov, Alexander A.; Larionova, Joulia; Guari, Yannick

doi:10.1002/chem.201605903

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Engineered Au Core@Prussian Blue Analogous Shell Nanoheterostructures: Their Magnetic and Optical Properties

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Willinger, Marc Georg
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Maurin‐Pasturel, G., Long, J., Palacios, M. A., Guérin, C., Charnay, C., Willinger, M. G., et al. (2017). Engineered Au Core@Prussian Blue Analogous Shell Nanoheterostructures: Their Magnetic and Optical Properties. Chemistry – A European Journal, 23(31), 7483-7496. doi:10.1002/chem.201605903.

Cite as: https://hdl.handle.net/21.11116/0000-0001-5F24-D

Abstract

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@KNi^II[Fe^II(CN)₆] core@shell and Au@KNi^II[Fe^II(CN)₆]@KNi^II[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.