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Gold Nanoparticles

nanoComposix has one of the world’s largest libraries of precisely engineered and highly characterized gold nanoparticles including:

NanoXact
- Spherical gold (2–200 nm) with citrate at 0.05 mg/mL
- Spherical gold (2–200 nm) with dodecanethiol and PVP dried; polystyrene, silica, aminated silica surfaces at 1 mg/mL
- Gold nanoshells (660, 800, 980 nm resonances) with PEG, PVP, carboxyl surfaces at 0.05 & 1 mg/mL
- Silver shelled gold (20, 60, 80 nm) with citrate at 1 mg/mL
- Gold nanorods (660, 800, 980 nm resonances) with citrate, PEG, PEG-carboxyl surfaces at 1 & 50 OD

BioPure
- Spherical gold (5–100 nm) with citrate, aminated, carboxyl, PEG, PVP surfaces at 1 mg/mL
BioReady
- Spherical gold (40 & 80 nm) & gold nanoshells (150 nm) with citrate, carboxyl, Streptavidin surfaces at 10 & 20 OD
Ultra Uniform
- Spherical gold (10–100 nm) with PEG-carboxyl surface at 0.05 mg/mL

nanoComposix University – Learn more about gold nanoparticles

Select a product tile below to learn more & buy

+ Help me with Product Lines

Product Line	Description	Available Materials	Available Surfaces	CV	Concentration	Available Dried	Buy	nanoComposix University
	Guaranteed low endotoxin	Gold, silver, platinum, magnetite	Multiple	< 18%	1 mg/mL	No	See products	Learn more
	For bioconjugation (lateral flow assays, etc.)	Gold	Multiple	< 15%	Varies; usually 20 OD	Yes	See products	Learn more
	Widest combination of materials and surfaces	Gold, silver, silica, platinum, magnetite	Multiple	Varies; usually < 15%	Varies	Yes	See products	Learn more
	Most monodisperse	Gold	PEG-carboxyl	< 5%	0.05 mg/mL	No	See products	Learn more
Do none of these work for you? Request a Custom Nanomaterial
	We also offer a variety of nanoparticle characterization services

+ Help me with Surfaces

Surface	Characteristics	Available Materials	Buy	NCX University
Bare (Citrate)	Easiest standard surface to displace with other molecules.	Gold, silver, platinum	See products	Learn more
Aminated (BPEI)	Covalently bound. Conjugatable surface.	Gold, silver	See products	Learn more
Carbonate	For biocojugation. Smaller, less complex molecule with a lower affinity to gold nanoparticle surface than citrate.	Gold	See products	Learn more
Carboxyl/Lipoic Acid	Covalently bound. Conjugatable surface.	Gold, silver	See products	Learn more
Dodecanethiol	Redispersible and stable in non-polar organic solvents.	Gold, silver	See products	Learn more
NHS	For quick and easy bioconjugation – no EDC/NHS activation required.	Gold	See products
PEG	Highest stability in aqueous buffers and polar organic solvents.	Gold, silver	See products	Learn more
Polystyrene	Hydrophobic surface that allows for dispersion in a wide range of polar organic solvents.	Gold	See products	Learn more
PVP	Large polymer surface. Stable in a wide variety of solvents.	Gold, silver, magnetite	See products	Learn more
Silica Shell	Greatest solvent compatibility. Preserves plasmonic properties upon deposition.	Gold, silver, silica	See products	Learn more
Silica Shell (Aminated)	Conjugatable surface. Greatest solvent compatibility. Preserves plasmonic properties upon deposition.	Gold, silver, silica	See products	Learn more
Streptavidin	For convenient bioconjugation of any biotinylated antibody, protein, or oligonucleotide.	Gold	See products
Tannic Acid	Less easily displaced than citrate but stable in more buffers.	Gold	See products	Learn more
Do none of these work for you? Request a Custom Surface