Gold Nanoparticles: Spheres

Gold nanoparticles for applications in diagnostics, biomedical therapies, and plasmonics.

TEM, UV-Vis, and DLS data provided with every batch
Unagglomerated and monodisperse
Sizes ranging from 5-100 nm with CVs of < 15%
Available with over 10 different surfaces

We make over 100 different variants of spherical gold nanoparticles. To help you decide which product is best, narrow your choice by Product Line, Surface, or Size below:

Select by Product Line
Select by Surface
Select by Size

Choose a product line below

Standard concentration & surfaces
0.05 mg/mL or dried

CV < 15%
Multiple surfaces available

For bioconjugation
(lateral flow assays, etc.)
Multiple ODs or dried

Sterile &
highly concentrated
1 mg/mL

Lowest prices & highest concentration
5 mg/mL

CV < 25%
PVP only

Most monodisperse

0.05 mg/mL

CV < 5%
PEG-carboxyl only

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

Still not sure? Take a look at our handy guide:

I’m looking to do bioconjugation

I’m looking for bare gold

I want to displace the surface with my own ligands

Bare (Citrate)
Easier to displace Tannic Acid
Stable in more solvents

I want something neutral and stable in many solvents

PVP
Easier to displace PEG
Stable in more solvents

I want something positively charged (cationic)

Aminated (BPEI) Aminated Silica Shell

I want something negatively charged (anionic)

Carboxyl Anionic Silica Shell

I want compatibility with non-polar organic solvents (chloroform, toluene, etc.)

Dodecanethiol Polystyrene

I still have no idea

2 nm 5 nm 7 nm 10 nm 15 nm 20 nm 30 nm 40 nm 50 nm 60 nm 70 nm 75 nm 80 nm 90 nm 100 nm 110 nm 120 nm 140 nm 150 nm

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