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Gold Nanospheres - 40 nm, for Passive Adsorption, Bioready, Bare (Citrate), OD 20, in Aqueous Sodium Citrate, high purity , CAS No.7440-57-5

  • 40 nm, for Passive Adsorption, Bioready, Bare (Citrate), OD 20, in Aqueous Sodium Citrate
  • CAS#:  7440-57-5
  • Formula:   Au
  • Molecular Weight:  196.97
  • PubChem CID:   23985
Item Number
G475285
Grouped product items
SKUSizeAvailabilityPrice Qty
G475285-5ml
5ml
Available within 8-12 weeks(?)
Production requires sourcing of materials. We appreciate your patience and understanding.
$379.90

Basic Description

Synonyms7440-57-5|Au|Gold|Colloidal gold|Gold powder|Gold flake|Gold leaf|Gold, colloidal|Aurum Metallicum|Gold, elemental|HSDB 2125|Gold foil|Gold wire|CI 77480|EINECS 231-165-9|Gold-197|UNII-79Y1949PYO|auride(1-)|gold(0)|79Y1949PYO|C.I. 77480|Gold (e 175)|Au(0)
Specifications & Purity40 nm, for Passive Adsorption, Bioready, Bare (Citrate), OD 20, in Aqueous Sodium Citrate
Stability And Storage DO NOT FREEZE. Store at 2-8C and away from light when not in use to maximize shelf life. Nanomaterials can be sensitive to high and low pH conditions and high salt concentrations. Use caution when changing environmental conditions as partic
Storage TempStore at 2-8°C
Shipped InWet ice
Product Description

Description:

Owing to their plasmonic properties nanoparticles of gold and silver find broad range of applications extending from diagnostics to molecular detection, photothermal and microwave-based therapies, and nanotoxicology. Colloidal silver nanoparticles also find applications in antimicrobial coatings, electronics and photovoltaics, and surface enhanced Raman spectroscopy (SERS) whereas the colloidal gold nanoparticles find applications in lateral flow assays (immunochromatographic assays) and as TEM labels and size standards.The BioReady gold nanospheres are well suited for passive conjugation of antibodies, proteins, peptides, and other biomolecules.

The BioReady citrate gold nanoparticles have a “naked” particle surface which contains a weakly bound citrate molecule as stabilizer. The citrate is readily displaced in presence of proteins and allows passive adsorption (also referred to as physisorption). The mechanism of adsorption is based on Van der Waals interactions between the proteins (e.g. antibodies) and the surface of the particles. The resulting forces between the antibody and the nanoparticle are influenced by the coupling environment. Our BioReady citrate gold is provided at an optical density (OD) of 20 at pH ~8.0–8.5. A pH titration should be performed to optimize the pH of conjugation.

Names and Identifiers

IUPAC Name gold
INCHI InChI=1S/Au
InChi Key PCHJSUWPFVWCPO-UHFFFAOYSA-N
Canonical SMILES [Au]
Isomeric SMILES [Au]
PubChem CID 23985
Molecular Weight 196.97

Certificates

Certificate of Analysis(COA)

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2 results found

Lot NumberCertificate TypeDateItem
C2408181Certificate of AnalysisJan 24, 2024 G475285
C2408378Certificate of AnalysisJan 24, 2024 G475285

Chemical and Physical Properties

Boil Point(°C)2808°C
Melt Point(°C)1063°C

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