Particle-in-a-Frame Nanostructures with Interior Nanogaps

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Designing plasmonic hollow colloids with small interior nanogaps would allow structural properties to be exploited that are normally linked to an ensemble of particles but within a single nanoparticle. Now, a synthetic approach for constructing a new class of frame nanostructures is presented. Fine control over the galvanic replacement reaction of Ag nanoprisms with Au precursors gave unprecedented Au particle-in-a-frame nanostructures with well-defined sub-2 nm interior nanogaps. The prepared nanostructures exhibited superior performance in applications, such as plasmonic sensing and surface-enhanced Raman scattering, over their solid nanostructure and nanoframe counterparts. This highlights the benefit of their interior hot spots, which can highly promote and maximize the electric field confinement within a single nanostructure.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2019-10
Language
English
Article Type
Article
Citation

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.58, no.44, pp.15890 - 15894

ISSN
1433-7851
DOI
10.1002/anie.201908291
URI
http://hdl.handle.net/10203/270046
Appears in Collection
CH-Journal Papers(저널논문)
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