Plasmonic metal nanoparticles – including gold, silver, and platinum – are highly efficient at absorbing and scattering light. By adjusting the nanoparticle size, shape, and composition, the color can be tuned from the ultraviolet through the visible to the near-infrared regions of the electromagnetic spectrum. Gold nanoparticles are ruby red and silver nanoparticles are a vibrant yellow. Plasmonic particles with other shapes have even broader color tenability. Additionally, the plasmonic nanoparticles can be engineered to be extremely strong absorbers (e.g. efficiently convert light to heat for photothermal therapies) and also very efficient scatters (e.g. for biodiagnostics).
How We Can Help
NanoComposix has one of the world’s largest libraries of plasmonic nanoparticles across a broad range of sizes, shapes, surfaces and materials. Each nanoparticle is provided with a specification sheet that correlates the particle geometry to the optical spectra. Plasmonic particles can be surface functionalized for integration into a wide variety of solvents and coatings. By attaching an antibody or other targeting agent to the particle surface, the plasmonic nanoparticles can be used for nanomedicine and diagnostic applications. Core/shell plasmonic structures combine the benefits of the plasmon resonance with fluorescent and magnetic functionality.
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Select a product tile below to learn more & buy
Surface |
Charge |
Characteristics |
Available Materials |
Buy |
NCX University |
Bare (Citrate) |
|
Easiest standard surface to displace with other molecules. |
Gold, silver, platinum |
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Aminated (BPEI) |
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Covalently bound. Conjugatable surface. |
Gold, silver |
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Carbonate |
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For biocojugation. Smaller, less complex molecule with a lower affinity to gold nanoparticle surface than citrate. |
Gold |
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Carboxyl/Lipoic Acid |
|
Covalently bound. Conjugatable surface. |
Gold, silver |
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Dodecanethiol |
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Redispersible and stable in non-polar organic solvents. |
Gold, silver |
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NHS |
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For quick and easy bioconjugation – no EDC/NHS activation required. |
Gold |
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|
PEG |
|
Highest stability in aqueous buffers and polar organic solvents. |
Gold, silver |
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Polystyrene |
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Hydrophobic surface that allows for dispersion in a wide range of polar organic solvents. |
Gold |
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PVP |
|
Large polymer surface. Stable in a wide variety of solvents. |
Gold, silver, magnetite |
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Silica Shell |
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Greatest solvent compatibility. Preserves plasmonic properties upon deposition. |
Gold, silver, silica |
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Silica Shell (Aminated) |
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Conjugatable surface. Greatest solvent compatibility. Preserves plasmonic properties upon deposition. |
Gold, silver, silica |
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Streptavidin |
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For convenient bioconjugation of any biotinylated antibody, protein, or oligonucleotide. |
Gold |
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|
Tannic Acid |
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Less easily displaced than citrate but stable in more buffers. |
Gold |
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Do none of these work for you? Request a Custom Surface |