20nm Carboxylated (carboxyl-PEG5000-SH) Silver Nanoparticles

Silver nanoparticle core size: 20nm (+/- 3nm)

Size dispersity: CV <18%

Surface composition: carboxyl-PEG5000-SH/methoxy-PEG2000-SH

Carboxyl surface density: 1/nm2

Absorption max: 398-410nm

Concentration: 1mg/ml 

Optical Density (OD): 125

Particles per ml: ~2.3E+13

Formulation: Supplied in USP grade purified water


The carboxyl functionalized silver nanoparticle surface allows for covalent conjugation of antibodies, proteins and other ligands using standard EDC/NHS coupling chemistry. 

The precisely engineered silver nanoparticle surface with extended carboxyl groups maximizes conjugation efficiency by minimizing steric hindrance while still maintaining low non-specific protein binding. These features results in reliable and reproducible conjugates. 


Store product away from light at 4°C. Do NOT freeze. 

When stored as specified the product is stable for at least three months.