Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

View All Documentation

765732

Sigma-Aldrich

Gold nanoparticles

30 nm diameter, methyl terminated, PEG 5000 coated, OD 50, dispersion in H2O

Synonym(s):

Gold nanoparticles OMe terminated, Au NP OMe, Gold Colloid

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

UNSPSC Code:
12162002
NACRES:
NA.23

material

PEG 5000

Quality Level

100

form

dispersion in H2O
nanoparticles

packaging

glass bottle of 1 mL

OD

50

diameter

30 nm

pH

6.0-8.0 (25 °C)

solubility

water: miscible

density

1.00 g/cm3

λmax

525 nm

functional group

methoxy

storage temp.

2-8°C

Looking for similar products? Visit Product Comparison Guide

General description

Gold nanoparticles (AuNPs) ranging from 2-200nm in diameter find applications in diverse fields.They show excellent biocompatibility and attractive physicochemical properties. AuNPs, as aggregates, are shown to be highly sensitive colloidal biosensors. Poly (ethylene) glycol (PEG) surface coatings on gold nanoparticles help in the reduction of protein adsorption, reduce nonspecific interactions with cells and greatly improve the pharmokinetics of these nanoparticles and disables aggregation of the nanoparticles. PEG layer density depends inversely on the AuNPs curvature. Denser coating was possible on smaller AuNPs. AuNPs coated with PEG 5000 exhibited highest colloidal stability. The methyl group, being hydrophobic, acts as a protecting shield between the gold nanoparticles and the hydrophilic outer PEG coating and also leads to a further reduction of protein adsorption and macrophage uptake by the AuNPs.[1][2][3]

Application

Functionalized Particles have been extensively used to study cellular uptake of nanoparticles and targeted drug delivery.
Several other specific applications have been listed below:
  • Since they adhere to cell membranes, AuNPs can be used in cellular and intracellular targeting in targeted drug delivery applications and also used in biodistribution studies.
  • AuNPs can be used in photothermal therapy and radiotherapy.
  • Studies show that 30-nm PEG-coated AuNPs have been successfully used to deliver tumor necrosis factor to solid tumors.[1][2][3]

Features and Benefits

Decreases the cytotoxicity and increases efficiency of GNPs in targeted drug delivery. PEG increases the stability of the nanoparticles and prevents agglomeration. Forms complexes easily with dyes and thiol ligands.[2]

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCQ5251
MKBZ8832V
MKBN9295V
MKBL7663V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Guodong Zhang et al.
Biomaterials, 30(10), 1928-1936 (2009-01-10)
Polyethylene glycol (PEG)-coated (pegylated) gold nanoparticles (AuNPs) have been proposed as drug carriers and diagnostic contrast agents. However, the impact of particle characteristics on the biodistribution and pharmacokinetics of pegylated AuNPs is not clear. We investigated the effects of PEG
Xiao-Dong Zhang et al.
International journal of nanomedicine, 6, 2071-2081 (2011-10-07)
Gold nanoparticle toxicity research is currently leading towards the in vivo experiment. Most toxicology data show that the surface chemistry and physical dimensions of gold nanoparticles play an important role in toxicity. Here, we present the in vivo toxicity of
Functionalized gold nanoparticles and their biomedical applications
Tiwari, P. M., Vig, K., Dennis, V. A., & Singh, S. R.
Nanomaterials, 1(1), 31-63 (2011)

Articles

Magnetic Nanoparticles for Cancer Theranostics

The recent emergence of a number of highly functional nanomaterials has enabled new approaches to the understanding, diagnosis, and treatment of cancer.

Micro- and Nanofabricated Biomaterials

Biomaterials science integrates smart materials into biological research, requiring a deep understanding of biological systems.

Questions

Reviews

No rating value

Active Filters

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