The gold nanoparticles are capped with citrate.
753645
Gold nanoparticles
50 nm diameter, OD 1, suspension in 0.1 mM PBS, reactant free
Synonym(s):
Au NP, Gold colloid
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| Size/SKU | Availability | Price |
|---|---|---|
25 mL | Available to ship TODAYfromMILWAUKEE | $168.00 $126.00 |
100 mL | Available to ship TODAYfromMILWAUKEE | $557.00 |
About This Item
$126.00
List Price$168.00Save 25%Web-Only Promotion
Available to ship TODAYDetails
Quality Segment
form
nanoparticles, suspension
packaging
poly bottle of 100 mL, poly bottle of 25 mL
storage condition
do not freeze
concentration
~3.5E+10 particles/mL
OD
1
diameter
50 nm
λmax
531-535 nm
PDI
<0.2
storage temp.
2-8°C
SMILES string
[Au]
InChI
1S/Au
InChI key
PCHJSUWPFVWCPO-UHFFFAOYSA-N
General description
Gold nanoparticles may be prepared by reduction of metal salt precursors with reducing agents, such as by citrate reduction of HAuCl4 in water.
Application
Gold nanoparticles are used in a wide range of applications. It may be used :
Gold nanoparticles 50 nm diameter, OD 1, stabilization suspension in 0.1 mM PBS, reactant free can be potentially used as a theranostic agent for the treatment of COVID-19. It may also be used in the fabrication of fiber-optic biosensors for low cost and fast detection of SARS-CoV-2.
Legal Information
Product of CytoDiagnostics, Inc.
1 of 1
This Item | |||
|---|---|---|---|
| description 50 nm diameter, OD 1, suspension in 0.1 mM PBS, reactant free | description 100 nm diameter, OD 1, suspension in 0.1 mM PBS, reactant free | description 20 nm diameter, OD 1, suspension in 0.1 mM PBS, reactant free | description 100 nm diameter, OD 1, suspension in citrate buffer |
| storage condition do not freeze | storage condition - | storage condition - | storage condition - |
| form suspension, nanoparticles | form nanoparticles, suspension | form suspension, nanoparticles | form nanoparticles, suspension |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| concentration ~3.5E+10 particles/mL | concentration ~3.8E+9 particles/mL | concentration ~6.54E+11 particles/mL | concentration ~3.8E+9 particles/mL |
| packaging poly bottle of 25 mL, poly bottle of 100 mL | packaging - | packaging - | packaging - |
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Storage Class
12 - Non Combustible Liquids
WGK
nwg
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
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Are the nanoparticles capped with any agents? If so, please let me know the material used as the capping agent.
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How many grams of gold nanoparticles in the 1 ml of 50nm gold nanoparticle suspension. Kindly provide this details as i need to know the diffusion rate of it.
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This is a product of CytoDiagnostics, Inc. The 50 nm gold particles have a weight concentration of 44.5 ug/mL. This is an approximation as there is some degree of variability in particle size. See the image below to review the gold nanoparticle specification ranges.
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What is the Department of Transportation shipping information for this product?
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Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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My gold nanoparticles settle out of solution upon storage. Is this normal?
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Settling of gold nanoparticles on the bottom of the storage flask is completely normal and is especially common for larger sized particles, which settles at greater speed. Settling does not affect the performance of the particles. Prior to use, simply swirl the solution to properly disperse your gold nanoparticles and obtain a homogenous solution.
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How does the storage temperature relate to shipping conditions?
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The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment.
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Why does my gold nanoparticle solution turn violet when I add salt containing buffer?
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Due to repulsive forces arising from the surface charge of gold nanoparticles, an energy barrier must be overcome for individual particles to interact. When no (or small) amounts of electrolytes such as NaCl is present, this energy barrier is too strong for interaction to occur between particles. However, upon addition of NaCl this energy barrier is reduced allowing the gold nanoparticles to interact and aggregate. This aggregation causes a phenomenon called surface-plasmon coupling which changes the adsorption maximum of light to a higher wavelength resulting in a change in color of the solution.
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What is the shape of the gold nanoparticles?
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The majority (>95%) of the gold nanoparticles are spherical.
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How do you attach gold nanoparticles to glass?
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To view the procedure on how to attach gold nanoparticles to glass please view information in the reference - Journal of Atomic, Molecular, and Optical PhysicsVolume 2012 (2012). Article ID 683830, 6 pagesdoi:10.1155/2012/683830
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How do you attach gold nanoparticles to peptides and peptide conjugates?
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To view information on how to attach gold nanoparticles to peptides and peptide conjugates, please view the information in the reference - Rosenthal, S. J. and Wright, D. W. (Eds.). (2005), p. 91-92. NanoBiotechnology Protocols. New Jersey. Humana Press.
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Do I need to wash my gold nanoparticles?
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For most applications, our gold nanoparticles can be used without any additional washing steps. If you have a sensitive application that requires additional washing the best way to do so is by either centrifugation or filtration.
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