Method of making nanoshells
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United States of America Patent
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N/A
Issued Date -
May 23, 2002
app pub date -
Sep 27, 2001
filing date -
Sep 27, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of coating a complete metal layer onto a functionalized substrate particle to form a nanoshell is provided. The nanoshell preferably has a plasmon resonance with a maximum at a wavelenth between about 400 nanometers and about 2 microns. The method preferably includes functionalizing the substrate particle by reducing a precursor metal selected from among tin and titanium onto the subsrate particle. A metal, preferably selected from among gold, silver, nickel, iron, platinum, palladium, and copper, is then reduced onto the functionalized substrate particle. The method of reduction may include rapidly mixing a solution containing the substrate particle, ions of the metal, and a reducing agent. For some metals, a base may be rapidly mixed with the solution effective to coat the metal onto the functionalized substrate particle.
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