Aqueous Gold Overgrowth of Silver Nanoparticles: Merging the Plasmonic Properties of Silver with the Functionality of Gold
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
To date, it has not been possible to combine the high optical quality of silver particles with the good chemical stability and synthetic convenience in a fully aqueous system, while simultaneously allowing chemical surface functionalization. We present a synthetic pathway for future developments in information, energy and medical technology where strong optical/electronic properties are crucial. Therefore, the advantages inherent to gold are fused with the plasmonic properties of silver in a fully aqueous Au/Ag/Au core–shell shell system. These nanoparticles inherit low dispersity from their masked gold cores, yet simultaneously exhibit the strong plasmonic properties of silver. Protecting the silver surface with a thin gold layer enables oxidant stability and functionality without altering the Ag-controlled optical properties. This combines both worlds—optical quality and chemical stability—and is not limited to a specific particle shape.
Details
Original language | English |
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Pages (from-to) | 15866-15870 |
Number of pages | 5 |
Journal | Angewandte Chemie - International Edition |
Volume | 56 |
Issue number | 50 |
Publication status | Published - 11 Dec 2017 |
Peer-reviewed | Yes |
External IDs
PubMed | 29044934 |
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Keywords
ASJC Scopus subject areas
Keywords
- bimetallic nanoparticles, nanocubes, oxidation stability, plasmonics, shape control