730793

Silver, dispersion

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

• Sinônimo(s): Colloidal silver
• Fórmula linear: Ag
• Número CAS: 7440-22-4
• Peso molecular: 107.87
• Número MDL: MFCD00003397
• Código UNSPSC: 12352302
• ID de substância PubChem: 329764595
• NACRES: NA.23

Propriedades

• Formulário: nanoparticles
• Nível de qualidade: 100
• contém: sodium citrate as stabilizer
• concentração: 0.02 mg/mL in aqueous buffer
• índice de refração: n20/D 1.333
• tamanho de partícula: 20 nm (TEM)
• densidade: 0.986 g/mL at 25 °C
• fluorescência: λ_em 401 nm FWHM 66 nm
• temperatura de armazenamento: 2-8°C
• cadeia de caracteres SMILES: [Ag]
• InChI: 1S/Ag
• chave InChI: BQCADISMDOOEFD-UHFFFAOYSA-N

Descrição

Descrição geral

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.

Aplicação

• Surface-enhanced Raman analysis of sulfa drugs on colloidal silver dispersion.: This research explores the application of colloidal silver dispersion for the surface-enhanced Raman scattering (SERS) analysis of sulfa drugs. The study demonstrates the potential of silver nanoparticles in enhancing Raman signals, making it a valuable technique for detecting and analyzing pharmaceuticals at low concentrations (Sutherland et al., 1990).

Informações de segurança

• Pictogramas: GHS09
• Palavra indicadora: Warning
• Frases de perigo: H410
• Declarações de precaução: P273 - P391 - P501
• Classificações de perigo: Aquatic Acute 1 - Aquatic Chronic 1
• Código de classe de armazenamento: 12 - Non Combustible Liquids
• Classe de risco de água (WGK): WGK 3
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable