This product is citrate stabilized gold colloid in 0.1 mM PBS.
753637
Gold nanoparticles
40 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 | $169.00 |
100 mL | Available to ship TODAYfromMILWAUKEE | $557.00 |
About This Item
Quality Segment
form
nanoparticles, suspension
concentration
~7.2E+10 particles/mL
OD
1
diameter
40 nm
λmax
526-531 nm
storage temp.
2-8°C
SMILES string
[Au]
InChI
1S/Au
InChI key
PCHJSUWPFVWCPO-UHFFFAOYSA-N
General description
Gold nanoparticles (AuNPs), 40 nm are quasi dynamic colloidal nanomaterials with good surface chemistry and high surface to volume ratio. Their properties include high stability, biocompatibility, and low toxicity which make them useful in biological applications.
Application
AuNPs can be used for a variety of applications such as biomedical, electrochemical and energy based devices. They can also be used in drug delivery and biosensing based device fabrication.
Legal Information
Product of CytoDiagnostics, Inc.
1 of 1
This Item | |||
|---|---|---|---|
| form nanoparticles, suspension | form nanoparticles, suspension | form nanoparticles, suspension | form nanoparticles, suspension |
| diameter 40 nm | diameter 30 nm | diameter 20 nm | diameter 10 nm |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
| concentration ~7.2E+10 particles/mL | concentration ~1.8E+11 particles/mL | concentration ~6.54E+11 particles/mL | concentration ~6.0E+12 particles/mL |
| OD 1 | OD 1 | OD 1 | OD 1 |
| λmax 526-531 nm | λmax 523-526 nm | λmax 518-522 nm | λmax 515-523 nm |
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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 this gold nanoparticles citrate-stabilized?
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which size of particule is recommended for SERS?
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We do not have a specific particle size of Gold Nanoparticle (AuNP) that is recommended for Surface-Enhanced Raman Spectroscopy. It is recommended to refer to the chemical literature to see what other researchers have used for this application.
To further discuss, we kindly ask you to navigate to the link https://www.sigmaaldrich.com/techservice, click on "Product Technical Inquires" under the Products Section with all the required information so that a member of our team can reach out to you to assist further. Thank you.
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Which gold nanoparticle size should I choose for my application?
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The size of gold nanoparticle to use is very depandent upon the intended application. Generally, smaller particles offer better sensitivity in applications such as immunogold labeling due to less steric hindrance and the ability to bind more gold nanoparticles to the desired target. Small gold nanoparticles are less visible than larger particles, however, which must also be taken into account.As an application example, particles with a size between 30-50nm are particularly useful for the development of rapid tests such as lateral flow assays.
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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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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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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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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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Can the Gold nanoparticles be frozen?
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No, the Gold nanoparticles should not be frozen. If frozen, the gold nanoparticles will irreversibly aggregate, turning the solution clear.
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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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How do you attach gold nanoparticles to oligos?
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To attach gold nanoparticles to oligos please view the information in the attached reference - Bioconjug Chem. 2011 Apr 20;22(4):794-807. Epub 2011 Mar 28.
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