Angewandte Chemie - International Edition
Angewandte Chemie - International Edition
5 years ago

Reversible clustering of gold nanoparticles under confinement

José M. Taboada, Ana Sánchez-Iglesias, Diego M. Solís, Nathalie Claes, Luis M Liz-Marzan, Sara Bals, Marek Grzelczak
A limiting factor of solvent-induced self-assembly of nanoparticles is the need for constant sample dilution in assembly/disassembly cycles. Changes in nanoparticle concentration alter the kinetics of the subsequent assembly process, limiting optical signal recovery. Here we show that by confining hydrophobic nanoparticles in permeable silica nanocapsules, the number of nanoparticles participating in cyclic aggregation remains constant despite bulk changes in the solution, leading to highly reproducible plasmon band shifts at different solvent compositions

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/anie.201800736

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