OECD 75 nm Spherical Silver Nanoparticles

  • Unagglomerated and monodisperse
  • Mean diameter: 75 nm +/- 5 nm
  • CV < 15%
  • Citrate or PVP surfaces
  • 1.0 mg/mL concentration
  • BioPure silver nanoparticles are fabricated and processed using the same methods as the OECD silver nanoparticle standards
  • Pricing
    • 1 mL: $200
    • 2 mL: $350
    • 5 mL: $750
    • 10 mL: $1200
  • Product SKUs
    • BioPure (1 mg/mL)
    • PVP: AGPO75
    • Citrate: AGCO75
Particle Diameter: 
75
Particle Concentration: 
BioPure
application/pdf iconAg75-oecd.pdf

Ordering

Available at concentrations of 1 mg/mL (0.1% by weight).    

Choose from citrate and PVP capping agents. Help me choose a capping agent.

Help me choose a capping agent

(Note: These capping agents not available for all products.)

Citrate: Citrate stabilized nanoparticles have a surface that is readily displaced by other biomolecules or polymers and is the capping agent of choice when using physisorption to further modify the nanoparticle surface.  Citrate capped particles are suspended in 2mM citrate buffer, pH 7.4. 

Tannic: Tannic acid is a multidentate capping agent that can be displaced with many thiol containing ligands.  As a general rule, tannic acid coated nanoparticles are more stable at high particle concentrations, while citrate capped nanoparticles are more stable in higher ionic strength solutions. 

Polyvinylpyrollidone (PVP): PVP is a polymer that binds strongly to the nanoparticle surface and provides greater stability than citrate or tannic acid capped nanoparticles. 

In general:

  • PVP capped nanoparticles are the most stable nanoparticles in high ionic strength solutions and at high concentrations. 
  • Tannic capped nanoparticles are more stable than citrate coated nanoparticles at high concentrations, and tannic acid can be displaced by reactive groups which have a high affinity for the silver surface.
  • Citrate capped nanoparticles are more stable than tannic capped nanoparticles in higher ionic strength solutions, and are the best choice when using physisorption to further modify the nanoparticle surface.