Accéder au contenu
Merck
Toutes les photos(4)

Key Documents

730793

Sigma-Aldrich

Silver, dispersion

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

Synonyme(s) :

Colloidal silver

Se connecterpour consulter vos tarifs contractuels et ceux de votre entreprise/organisme
Toutes les photos(4)

About This Item

Formule linéaire :
Ag
Numéro CAS:
7440-22-4
Poids moléculaire :
107.87
Numéro MDL:
MFCD00003397
Code UNSPSC :
12352302
ID de substance PubChem :
329764595
Nomenclature NACRES :
NA.23

Forme

nanoparticles

Niveau de qualité

100

Contient

sodium citrate as stabilizer

Concentration

0.02 mg/mL in aqueous buffer

Indice de réfraction

n20/D 1.333

Taille des particules

20 nm (TEM)

Densité

0.986 g/mL at 25 °C

Fluorescence

λem 401 nm FWHM 66 nm

Température de stockage

2-8°C

Chaîne SMILES 

[Ag]

InChI

1S/Ag

Clé InChI

BQCADISMDOOEFD-UHFFFAOYSA-N

Vous recherchez des produits similaires ? Visite Guide de comparaison des produits

Description générale

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.

Application


  • 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).


Pictogrammes

Environment
GHS09

Mention d'avertissement

Warning

Mentions de danger

H410

Conseils de prudence

P273 - P391 - P501

Classification des risques

Aquatic Acute 1 - Aquatic Chronic 1

Code de la classe de stockage

12 - Non Combustible Liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

Déjà en possession de ce produit ?

Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Lingting Huang et al.
Mikrochimica acta, 187(10), 563-563 (2020-09-14)
A paper-based visual fluorescence immunoassay is presented for the detection of matrix metalloproteinase-7 (MMP7) that is related to renal cancer. The method is based on the distance-dependent fluorescence quenching of CdTe quantum dots (QDs) on a nitrocellulose membrane by Ag+ following a sandwich-type immunoreaction

Articles

Silver Nanomaterials for Biological Applications

Silver nanomaterials have unique physical, chemical, and optical properties that are currently being leveraged for a wide variety of biological applications.

Nanostructured Materials Through Ultrasonic Spray Pyrolysis

The diversity of applications and nanostructured materials accessible using ultrasonic spray methods are highlighted in this article.

Nanostructured Materials via Ultrasonic Spray Pyrolysis

Ultrasonic spray pyrolysis produces scalable nanomaterials like metal oxides and quantum dots for diverse applications.

Noble Bimetallic Nanoparticles in Glucose Detection

Research on noble bimetallic nanoparticles for glucose biosensor detection.

Notre équipe de scientifiques dispose d'une expérience dans tous les secteurs de la recherche, notamment en sciences de la vie, science des matériaux, synthèse chimique, chromatographie, analyse et dans de nombreux autres domaines..

Contacter notre Service technique