Photoinduced phase separation of gold in two-component nanoparticles to form nanoprisms
AssigneeNorthwestern University
InventorsChad A. Mirkin, Gabriella Metraux, Rongchao Jin
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Abstract
Nanoprisms containing silver and gold are disclosed. The nanoprisms exhibit the properties of pure silver nanoprisms, but are less susceptible to silver modification or reaction by a surrounding environment than pure silver nanoprisms due to the presence of the gold. The gold surface of the nanoprisms can be further modified, using known gold-modification techniques.
Claims18
A method of preparing a nanoprism comprising the steps of
- a) admixing a silver nanoparticle and a gold source under conditions that deposit gold on a surface of the silver nanoparticle to form a two-metal nanoparticle;
- and
- b) irradiating the two-metal nanoparticle with a light source to form a nanoprism.
A method of preparing a nanoprism comprising the step of irradiating a nanoparticle of a silver-gold alloy with a light source to form the nanoprism.
A silver nanoprism having gold nanoparticles on the nanoprism surface.
Dependencies are inferred from the claim text.