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Reversible Clustering of Gold Nanoparticles under Confinement.

ABSTRACT: A limiting factor of solvent-induced nanoparticle self-assembly is the need for constant sample dilution in assembly/disassembly cycles. Changes in the nanoparticle concentration alter the kinetics of the subsequent assembly process, limiting optical signal recovery. Herein, we show that upon confining hydrophobic nanoparticles in permeable silica nanocapsules, the number of nanoparticles participating in cyclic aggregation remains constant despite bulk changes in solution, leading to highly reproducible plasmon band shifts at different solvent compositions.

SUBMITTER: Sanchez-Iglesias A

PROVIDER: S-EPMC6468316 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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Reversible Clustering of Gold Nanoparticles under Confinement.

Sánchez-Iglesias Ana A Claes Nathalie N Solís Diego M DM Taboada Jose M JM Bals Sara S Liz-Marzán Luis M LM Grzelczak Marek M

Angewandte Chemie (International ed. in English) 20180221 12

A limiting factor of solvent-induced nanoparticle self-assembly is the need for constant sample dilution in assembly/disassembly cycles. Changes in the nanoparticle concentration alter the kinetics of the subsequent assembly process, limiting optical signal recovery. Herein, we show that upon confining hydrophobic nanoparticles in permeable silica nanocapsules, the number of nanoparticles participating in cyclic aggregation remains constant despite bulk changes in solution, leading to highly rep ...[more]

PMID: 29417726

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