Journal
ACS NANO
Volume 8, Issue 6, Pages 5833-5842Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn500727w
Keywords
gold; nanotriangles; shape separation; interfacial self-assembly; SERS
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Funding
- European Research Council (ERC) [267867 Plasmaquo]
- Spanish Ministry of Education, Culture and Sports
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Au nanotriangles display interesting nanoplasmonic features with potential application in various fields. However, such applications have been hindered by the lack of efficient synthetic methods yielding sufficient size and shape monodispersity, as well as by insufficient morphological stability. We present here a synthesis and purification protocol that efficiently addresses these issues. The size of the nanotriangles can be tuned within a wide range by simply changing the experimental parameters. The obtained monodispersity leads to extended self-assembly, not only on electron microscopy grids but also at the air liquid interface, allowing transfer onto centimeter-size substrates. These extended monolayers show promising performance as surface-enhanced Raman scattering substrates, as demonstrated for thiophenol detection.
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