20 nm Gold Nanospheres
Customers outside of the US & Canada: please visit your local distributor’s website to purchase this item using its SKU, or contact us here. Thank you!
As a global leader in gold nanoparticle production, nanoComposix specializes in providing high-purity and monodisperse nanomaterials – delivering the quality you need for consistent results.
20 nm spherical gold nanoparticles combine strong plasmonic optical properties with versatile surface functionalization capabilities. These nanoparticles are useful in a broad range of applications from immunodiagnostics, biosensors, sensing, optical effects, drug delivery, and more.
nanoComposix provides high quality nanomaterials that are precisely engineered and highly characterized. All products are supplied with batch-specific CoA’s including TEM, DLS, Zeta, and UV-Vis characterization data.
Intended for Research Use Only. Contact us for custom formulations, ISO 13485/cGMP compliant materials, or bulk supply requirements.
| Overview | |||
|---|---|---|---|
| Surface | Citrate | Silica Shelled | Silica Shelled, Aminated |
| Description | Easiest standard surface to displace with other molecules. | Greatest solvent compatibility. Preserves plasmonic properties upon deposition. | Conjugatable surface. Greatest solvent compatibility. Preserves plasmonic properties upon deposition. |
| Solvent | 0.05 mg/mL (NanoXact): 2 mM sodium citrate solution 1 mg/mL (BioPure): 0.2 mM sodium citrate solution |
Ethanol | Ethanol |
| Surface chemistry | Sodium citrate | Silanol | Silanol |
| Specifications | |||
| Surface | Citrate | Silica Shelled | Silica Shelled, Aminated |
| TEM Diameter | 20 ± 3 nm | Core: 20 ± 3 nm Shell: 20 ± 5 nm |
Core: 20 ± 3 nm Shell: 20 ± 5 nm |
| CV | ≤ 15% | ≤ 15% (total diameter) | ≤ 15% (total diameter) |
| Documents | |||
| Surface | Citrate | Silica Shelled | Silica Shelled, Aminated |
| Example Certificate of Analysis (CoA) | Download | Download | Download |
| Safety Data Sheet (SDS) | 0.05 mg/mL (NanoXact) 1 mg/mL (BioPure) |
1 mg/mL (NanoXact) | 1 mg/mL (NanoXact) |
| Expected Ranges | |||
| Surface | Citrate | Silica Shelled | Silica Shelled, Aminated |
| Hydrodynamic diameter (DLS) | TEM diameter + 2–12 nm | TEM diameter + 15–80 nm | TEM diameter + 15–90 nm |
| Zeta potential | ≤ –15 mV | ≤ –10 mV | ≥ 10 mV |
| pH of solution | 5.5–8.5 | N/A | N/A |
| Peak wavelength (λmax) | 515–560 nm | 525–590 nm | 525–590 nm |