MilliporeSigma
All Photos(1)

Documents

765511

Sigma-Aldrich

Gold nanoparticles

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

Sign Into View Organizational & Contract Pricing

Synonym(s):
Gold nanoparticles COOH functionalized, Au NP COOH, Gold Colloid
NACRES:
NA.23

material

PEG 5000

form

dispersion in H2O
nanoparticles

packaging

poly bottle of 1 mL

OD

50

diameter

20 nm

pH

6.0-8.0 (25 °C)

solubility

water: miscible

density

1.00 g/cm3

λmax

520 nm

functional group

carboxyl

storage temp.

2-8°C

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
765538765589765430
Gold nanoparticles 20 nm diameter, carboxylic acid functionalized, PEG 5000 coated, OD 50, dispersion in H2O

Sigma-Aldrich

765511

Gold nanoparticles

Gold nanoparticles 30 nm diameter, carboxylic acid functionalized, PEG 3000 coated, OD 50, dispersion in H2O

Sigma-Aldrich

765538

Gold nanoparticles

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

Sigma-Aldrich

765589

Gold nanoparticles

Gold nanoparticles 5 nm diameter, carboxylic acid functionalized, PEG 3000 coated, OD 50, dispersion in H2O

Sigma-Aldrich

765430

Gold nanoparticles

functional group

carboxyl

functional group

carboxyl

functional group

carboxyl

functional group

carboxyl

material

PEG 5000

material

PEG 3000

material

PEG 5000

material

PEG 3000

packaging

poly bottle of 1 mL

packaging

poly bottle of 1 mL

packaging

poly bottle of 1 mL

packaging

poly bottle of 1 mL

OD

50

OD

50

OD

50

OD

50

diameter

20 nm

diameter

30 nm

diameter

50 nm

diameter

5 nm

General description

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

Application

Carboxylic acid functionalized, PEG 5000 coated, OD 50, and H2O dispersed gold nanoparticles can be potentially used in the development of biosensors, cancer-cell imaging, drug delivery, and photothermal therapy.
AuNPs may be used to prepare SARS-CoV-2 conjugate for COVID-19 detection using lateral flow immunoassay technique. It 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 various proteins and can be used in targeted drug delivery and gene therapy.
Functionalized Particles have been extensively used to study cellular uptake of nanoparticles and targeted drug delivery.

Features and Benefits

Decreases the cytotoxicity and increases efficiency of GNPs in targeted drug delivery. The PEG increases the stability of the nanoparticles and prevents agglomeration.

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 3

1 of 3

Development and clinical application of a rapid IgM-IgG combined antibody test for SARS-CoV-2 infection diagnosis
Li Z, et al.
Journal of Medical Virology, 6, 2071-2071 (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
Recent advances in nanoparticle-based lateral flow immunoassay as a point-of-care diagnostic tool for infectious agents and diseases
Banerjee R and Jaiswal A
Analyst, 143(9), 1970-1996 (2018)
Optical Fiber Sensors for Rapid Screening of COVID-19
Nag P, et al.
Transactions of the Indian National Academy of Engineering, 143(9), 1-4 (2020)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service