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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25 ML
$160.00
100 ML
$525.00
About This Item
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Quality Level
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
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Related Categories
1 of 4
This Item | 753629 | 753610 | 741957 |
|---|---|---|---|
| form nanoparticles, suspension | form nanoparticles, suspension | form nanoparticles, suspension | form nanoparticles, suspension |
| 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 |
| diameter 40 nm | diameter 30 nm | diameter 20 nm | diameter 10 nm |
| λmax 526-531 nm | λmax 523-526 nm | λmax 518-522 nm | λmax 515-519 nm |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
General description
Application
Legal Information
Product of CytoDiagnostics, Inc.
Storage Class
12 - Non Combustible Liquids
wgk_germany
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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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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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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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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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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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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