• Lee, Tungchun
• Alarcón-Correa, Mariana
• Fischer, Peer
• Alarcóncorrea, Mariana

Abstract

<jats:title>Abstract</jats:title><jats:p>Host–guest inclusion complexes are abundant in molecular systems and of fundamental importance in living organisms. Realizing a colloidal analogue of a molecular dynamic inclusion complex is challenging because inorganic nanoparticles (NPs) with a well‐defined cavity and portal are difficult to synthesize in high yield and with good structural fidelity. Herein, a generic strategy towards the fabrication of dynamic 1:1 inclusion complexes of metal nanoparticles inside oxide nanocups with high yield (&gt;70 %) and regiospecificity (&gt;90 %) by means of a reactive double Janus nanoparticle intermediate is reported. Experimental evidence confirms that the inclusion complexes are formed by a kinetically controlled mechanism involving a delicate interplay between bipolar galvanic corrosion and alloying–dealloying oxidation. Release of the NP guest from the nanocups can be efficiently triggered by an external stimulus.</jats:p>

Topics

• nanoparticle
• impedance spectroscopy
• inclusion
• reactive
• galvanic corrosion