所有图片(1)

765503

Sigma-Aldrich

Gold nanoparticles

20 nm diameter, carboxylic acid functionalized, PEG 3000 coated, OD 50, dispersion in H2O

别名:
Gold nanoparticles COOH functionalized, Gold Colloid, Au NP COOH
NACRES:
NA.23

质量水平

100

物料

PEG 3000

形式

dispersion in H2O
nanoparticles

包装

poly bottle of 1 mL

OD

50

直径

20 nm

pH值(酸碱度)

6.0-8.0 (25 °C)

溶解性

water: miscible

密度

1.00 g/cm3

λmax

520 nm

官能团

carboxyl

储存温度

2-8°C

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一般描述

Gold nanoparticles (AuNPs) ranging from 2-200nm in diameter find applications in diverse fields. They show excellent biocompatibility and attractive physicochemical properties. 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 reduce aggregation of the nanoparticles. PEG layer density depends inversely on the AuNP curvature. Denser coating was possible on smaller AuNPs. Carboxylic acid functionalized GNPs form conjugates with various protein molecules due to the electrostatic attraction between the negatively charged carboxylate groups and positively charged amino groups of protein. Since it adheres to cell membranes, it may find use in cellular and intracellular targeting in targeted drug delivery applications and also used in biodistribution studies.

应用

Several other specific applications have been listed below:
  • Since they adhere to cell membranes, AuNPs may find use in cellular and intracellular targeting in targeted drug delivery applications and may also be used in biodistribution studies.
  • AuNPs may also be used in photothermal therapy and radiotherapy.
  • AuNPs ranging from 10 to 250 nm, were studied to have been absorbed primarily by liver and spleen, when injected intravenously in rats.Whereas, 10 nm nanoparticles were distributed more broadly into various organs.
  • Carboxylic acid end-groups bind with various proteins and hence are used in targeted drug delivery and gene therapy.
Functionalized Particles have been extensively used to study cellular uptake of nanoparticles and targeted drug delivery.

包装

1 mL in poly bottle

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

闪点(F)

Not applicable

闪点(C)

Not applicable

分析证书

原产地证书 (CofO)

Alexandre Albanese et al.
ACS nano, 5(7), 5478-5489 (2011-06-23)
Aggregation appears to be a ubiquitous phenomenon among all nanoparticles and its influence in mediating cellular uptake and interactions remain unclear. Here we developed a simple technique to produce transferrin-coated gold nanoparticle aggregates of different sizes and characterized their uptake...
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...
Sarah D Brown et al.
Journal of the American Chemical Society, 132(13), 4678-4684 (2010-03-17)
The platinum-based anticancer drugs cisplatin, carboplatin, and oxaliplatin are an important component of chemotherapy but are limited by severe dose-limiting side effects and the ability of tumors to develop resistance rapidly. These drugs can be improved through the use of...
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...
Timothy A Larson et al.
ACS nano, 6(10), 9182-9190 (2012-09-27)
Polyethylene glycol (PEG) surface coatings are widely used to render stealth properties to nanoparticles in biological applications. There is abundant literature on the benefits of PEG coatings and their ability to reduce protein adsorption, to diminish nonspecific interactions with cells...

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