Nanoaggregate composition and method for making
OwnerJulia Xiaojun Zhao, Shuping Xuinventors
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Abstract
A nanoaggregate composition and method for making nanoaggregate compositions constructed with one, two, and three nanoparticle building blocks includes coating the building blocks with a concentration of polyvinylpyrrolidone (PVP) molecules based on a known relationship between the concentration and an extent of aggregation of the building blocks, and producing nanoaggregates from the building blocks comprising a mixture of single-core nanoaggregates, double-core nanoaggregates, and triple-core nanoaggregates as a function of the extent of aggregation.
Claims20
A method comprising:
- forming nanoparticle cores;
- forming a metal shell on a surface of the nanoparticle cores to produce nanoaggregate building blocks;
- coating the nanoaggregate building blocks with a concentration of polyvinylpyrrolidone molecules;
- and
- producing nanoaggregates from the building blocks comprising a mixture of single-core nanoaggregates, double-core nanoaggregates, and triple-core nanoaggregates as a function of the concentration of polyvinylpyrrolidone molecules coating the nanoaggregate building blocks.
The method of claim 10, wherein forming the metal shell on the surface of the nanoparticle cores to produce the nanoaggregate building blocks comprises adsorbing gold nanoparticles onto the surface of the nanoparticle cores and growing the gold nanoparticles in a growth solution to form the metal shell.
A method comprising:
- forming nanoparticle cores;
- forming a metal shell on a surface of the nanoparticle cores to produce nanoaggregate building blocks;
- controlling a concentration of polyvinylpyrrolidone molecules to coat the nanoaggregate building blocks based on a known relationship between the concentration and an extent of aggregation of the building blocks;
- and
- producing nanoaggregates from the building blocks comprising a mixture of single-core nanoaggregates, double-core nanoaggregates, and triple-core nanoaggregates as a function of the extent of aggregation.
A composition comprising:
- a nanoaggregate mixture comprising a percentage of single-core, double-core, and triple-core nanoaggregates, each nanoaggregate comprising nanoparticle cores, with each nanoparticle core having a metal shell;
- and
- a concentration of polyvinylpyrrolidone molecules adsorbed to each nanoaggregate to produce the percentage of single-core, double-core, and triple-core nanoaggregates in the mixture.
Dependencies are inferred from the claim text.