40 nm Gold Nanospheres
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40 nm spherical gold nanoparticles are useful in applications such as biosensors, plasmonic optical effects, and drug delivery systems. For cell culture and other sensitive biological applications, a low-endotoxin formulation filtered through a 0.22 µm membrane is available at 1 mg/mL.
nanoComposix provides high quality, monodisperse, and aggregation-free nanomaterials. All our products are supplied with a batch-specific Certificate of Analysis including characterization data such as TEM, DLS, Zeta, and UV-Vis.
Intended for Research Use Only. Not for use in diagnostic procedures. Contact us for custom formulations and ISO 13485/cGMP compliant materials, or bulk supply requirements.
| Overview | |
|---|---|
| Surface | Citrate |
| Description | Easiest standard surface to displace with other molecules. |
| Solvent | 0.05 mg/mL (AUCN40): 2 mM sodium citrate solution 1 mg/mL (AUCB40): Aqueous 0.2 mM Sodium Citrate |
| Surface chemistry | Citrate |
| Specifications | |
| TEM Diameter | 40 ± 4 nm |
| CV | ≤ 15% |
| Endotoxin Content | ≤ 1 EU/mL (AUCB40) |
| Documents | |
| Example Certificate of Analysis (CoA) | Download |
| Safety Data Sheet (SDS) | 0.05 mg/mL (AUCN40) 1 mg/mL (AUCB40) |
| Storage & Handling | Download |
| Expected Ranges | |
| Hydrodynamic diameter (DLS) | TEM diameter + 2–12 nm |
| Zeta potential | ≤ –15 mV |
| pH of solution | 5.5–8.5 |
| Peak wavelength (λmax) | 520–525 nm |