BioPure Gold Nanoparticles
| Nanoparticle Diameter | OD (cm−1) | Concentration (nps/mL) |
|---|---|---|
| 5 nm | 16.0 | 7.91 x 1014 |
| 7 nm | 16.4 | 2.88 x 1014 |
| 10 nm | 16.4 | 9.88 x 1013 |
| 12 nm | 16.6 | 5.72 x 1013 |
| 15 nm | 16.6 | 2.92 x 1013 |
| 17 nm | 16.8 | 2.02 x 1013 |
| 20 nm | 16.9 | 1.24 x 1013 |
| 30 nm | 22.1 | 3.66 x 1012 |
| 40 nm | 22.6 | 1.54 x 1012 |
| 50 nm | 29.1 | 7.90 x 1011 |
| 60 nm | 31.8 | 4.58 x 1011 |
| 70 nm | 31.8 | 2.88 x 1011 |
| 80 nm | 31.5 | 1.93 x 1011 |
| 90 nm | 26.4 | 1.36 x 1011 |
| 100 nm | 20.1 | 9.88 x 1010 |
BioPure spherical gold nanoparticles are unagglomerated, monodisperse, nanoparticles that have been concentrated and purified to remove residual reactants. Particles are available in sizes ranging from 5-100 nm and with citrate, tannic acid, or PVP surfaces.
BioPure Specifications:
- Au mass concentration: 1.0 mg/mL (0.1% by wt)
- Au atomic molarity: 5.08 mM
Help me choose a concentration
NanoXact: Spherical, unagglomerated, narrow size distribution (0.02 mg/mL for silver, 0.05 mg/mL for gold).
BioPure: NanoXact materials that have been extensively purified and concentrated to 1 mg/mL (a 50x increase for silver, 20x for gold).
In general:
- BioPure formulations are ideal for applications that require high concentration and/or low residual reactants. Examples include nanotoxicology, environmental studies, lateral flow assays, and applications that require significant dilution.
- NanoXact formulations are ideal for applications which require lower concentrations, and are not sensitive to small amounts of residual reactants.
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.