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Dynamic Inclusion Complexes of Metal Nanoparticles Inside Nanocups




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 (> 70%) and regiospecificity (> 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. Featured cover article.

Author(s): Alarcon-Correa, Mariana and Lee, T. C. and Fischer, Peer
Journal: Angew. Chem. Int. Ed.
Volume: 54
Number (issue): 23
Pages: 6730-6734
Year: 2015
Month: May

Department(s): Micro, Nano, and Molecular Systems
Bibtex Type: Article (article)

DOI: 10.1002/anie.201500635
Note: Featured cover article.
State: Published


  title = {Dynamic Inclusion Complexes of Metal Nanoparticles Inside Nanocups},
  author = {Alarcon-Correa, Mariana and Lee, T. C. and Fischer, Peer},
  journal = {Angew. Chem. Int. Ed.},
  volume = {54},
  number = {23},
  pages = {6730-6734},
  month = may,
  year = {2015},
  note = {Featured cover article.},
  month_numeric = {5}