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Merck
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文件

730793

Sigma-Aldrich

胶态银溶液

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

别名:

Colloidal silver

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About This Item

线性分子式:
Ag
CAS号:
7440-22-4
分子量:
107.87
MDL號碼:
MFCD00003397
分類程式碼代碼:
12352302
PubChem物質ID:
329764595
NACRES:
NA.23

形狀

nanoparticles

包含

sodium citrate as stabilizer

濃度

0.02 mg/mL in aqueous buffer

折射率

n20/D 1.333

粒徑

20 nm (TEM)

密度

0.986 g/mL at 25 °C

螢光

λem 401 nm FWHM 66 nm

儲存溫度

2-8°C

SMILES 字串

[Ag]

InChI

1S/Ag

InChI 密鑰

BQCADISMDOOEFD-UHFFFAOYSA-N

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相关类别

一般說明

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.

應用


  • 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).


象形圖

Environment
GHS09

訊號詞

Warning

危險聲明

H410

防範說明

P273 - P391 - P501

危險分類

Aquatic Acute 1 - Aquatic Chronic 1

儲存類別代碼

12 - Non Combustible Liquids

水污染物質分類（WGK）

WGK 3

閃點（°F）

Not applicable

閃點（°C）

Not applicable

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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

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