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The plasmon band in noble metal nanoparticles


Noble metal nanoparticles chemistry is a domain in rapid expansion, as those objects lead to
interesting applications in the fields of catalysis, biosensing, electronics and optics. Because of
their structure, intermediate between that of molecules and of bulk material, they enable to bridge
the gap between molecular chemistry and surface science. In particular, their optical properties,
known since antiquity, have already shown a part of their potential and further major discoveries
can reasonably be expected. Their most insightful optical properties rely on a strong absorption in
the visible spectrum, called the plasmon band, that colloidal solutions of gold, silver or copper
feature. Herein we wish to present a comprehensible overview of the fundamentals of the theories
explaining the phenomenon dedicated to chemists seeking an introduction to those features.

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