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765589

Sigma-Aldrich

Gold nanoparticles

50 nm diameter, carboxylic acid functionalized, PEG 5000 coated, dispersion in H2O

Sinonimo/i:

Gold nanoparticles COOH functionalized, Au NP COOH, Gold Colloid

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About This Item

Codice UNSPSC:
12162002
NACRES:
NA.23

Materiali

PEG 5000

Forma fisica

dispersion in H2O
nanoparticles

Confezionamento

poly bottle of 1 mL

OD

50

Diametro

50 nm

pH

6.0-8.0 (25 °C)

Solubilità

water: miscible

Densità

1.00 g/cm3

λmax

535 nm

Gruppo funzionale

carboxylic acid

Temperatura di conservazione

2-8°C

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Categorie correlate

Descrizione generale

Carboxylic acid functionalized GNPs forms conjugates with various protein molecules due to the electrostatic attraction between negatively charged carboxylate groups and positively charged amino groups of protein.

Applicazioni

Gold nanoparticles 50 nm diameter, carboxylic acid functionalized, PEG 5000 coated, dispersion in H2O can be potentially used in the development of biosensors, cancer-cell imaging, drug delivery, and photothermal therapy.
AuNPs may also be used in the immobilization of antibodies to improve the sensitivity of optical fiber sensors for the screening of COVID-19. It can also be deposited on the titanium electrode for the formation of a miniaturized device for the electrochemical detection of DNA hybridization.
The carboxylic acid group binds with proteins and is used in targeted drug delivery and gene therapy.
Functionalized Particles have been extensively used to study cellular uptake of nanoparticles and targeted drug delivery.

Codice della classe di stoccaggio

10 - Combustible liquids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Certificati d'analisi (COA)

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Functionalized gold nanoparticles and their biomedical applications
Nanomaterials, 1(1), 31-63 (2011)
Optical Fiber Sensors for Rapid Screening of COVID-19
Nag P, et al.
Transactions of the Indian National Academy of Engineering, 6, 1-4 (2020)
Size-dependent in vivo toxicity of PEG-coated gold nanoparticles
Zhang X, et al.
International journal of nanomedicine, 6, 2071-2071 (2011)
Nishima Wangoo et al.
Journal of colloid and interface science, 323(2), 247-254 (2008-05-20)
We report a novel strategy for the synthesis of aqueous stable, carboxylated gold nanoparticles (GNPs) by using glutamic acid as the reducing agent. The ratio of chloroaurate ions, AuCl(-)(4) to glutamic acid was optimized in the reaction medium to obtain

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