730793

Silber, Dispersion

nanoparticles, 20 nm particle size (TEM), 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer

• Synonym(e): Colloidal silver
• Lineare Formel: Ag
• CAS-Nummer: 7440-22-4
• Molekulargewicht: 107.87
• MDL-Nummer: MFCD00003397
• UNSPSC-Code: 12352302
• PubChem Substanz-ID: 329764595
• NACRES: NA.23

Eigenschaften

• Form: nanoparticles
• Qualitätsniveau: 100
• Enthält: sodium citrate as stabilizer
• Konzentration: 0.02 mg/mL in aqueous buffer
• Brechungsindex: n20/D 1.333
• Partikelgröße: 20 nm (TEM)
• Dichte: 0.986 g/mL at 25 °C
• Fluoreszenz: λ_em 401 nm FWHM 66 nm
• Lagertemp.: 2-8°C
• SMILES String: [Ag]
• InChI: 1S/Ag
• InChIKey: BQCADISMDOOEFD-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

Our 20 nm silver nanoparticles are ideal for biosensing and fluorescent imaging applications.These spherical particles are stabilized in an aqueous citrate buffer to prevent aggregation. Silver nanoparticles efficiently absorb and scatter light due to the conduction electrons on their surface undergoing collective oscillations, known as surface plasmon resonance (SPR), when excited by specific wavelengths. Unlike gold nanoparticles, which absorb at longerwavelengths (500+ nm), silver nanoparticles absorb at shorter wavelengths(400-450 nm). At a 20 nm size, our nanoparticles have a peak absorptionwavelength (λ) of 400 nm and a narrow full width at half maximum (FWHM) of 66nm, thanks to their high monodispersity. These optoelectronic properties, combined with their high surface area, make them effective for detecting biomolecules, pathogens, and environmental contaminants.

Anwendung

• Surface-enhanced Raman analysis of sulfa drugs on colloidal silver dispersion.: In dieser Forschungsarbeit wird die Anwendung kolloidaler Silberdispersionen für die oberflächenverstärkte Raman-Streuung (SERS) zur Analyse von Sulfamitteln untersucht. Die Studie zeigt das Potenzial von Silbernanopartikeln bei der Verstärkung von Raman-Signalen, was sie zu einer wertvollen Technik für den Nachweis und die Analyse von Arzneimitteln in niedrigen Konzentrationen macht (Sutherland et al., 1990).

Sicherheitshinweise

• Piktogramme: GHS09
• Signalwort: Warning
• H-Sätze: H410
• P-Sätze: P273 - P391 - P501
• Gefahreneinstufungen: Aquatic Acute 1 - Aquatic Chronic 1
• Lagerklassenschlüssel: 12 - Non Combustible Liquids
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable