Many of these advantages are included in our pending patent. The polymer cages have the additional advantages of 1) long shelf life 2) storage at room temperatures 3) reduced aggregation 4) reduced non-specific binding 5) the ability to be further concentrated upwards of 5000 times 5) covalent bonds 6) operation in pHs from 3 to 11 and 7) cloaking effect in in vivo applications. Being highly concentrated, the customer has the option to dilute as needed - which is very popular.
Further, our yield in processing is about 50%, so it takes 100 mL of gold nanoparticles to make 1 mL of extremely high concentrated product. First, though they come in 1 mL sizes, they come highly concentrated (> 50x). Why?Īctually, the contrary is true, they are comparatively inexpensive. Your conjugated products seem really expensive - $500 for a mL. Please see our info notes comparing these products. Whereas quantum dots may come in molarity that are 100 times that of our products, our gold nanoparticles are 10-50 times the size with 5 orders of magnitude greater absorption and scattering. The bottom line is that gold nanoparticles are a completely different product than quantum dots. We often are asked why we don't sell ours by molarity too. Info Note 804: UV-VIS Nomenclature and Units If you'd like to know more about Optical Density - mL and how its used, please visit our info note at: (Usually always at the customer's expense!!). Depending on the process, the amount of gold that is used versus the amount of gold that ultimately winds up as gold nanoparticles can vary 10-fold. When we see competitors selling their products by gold weight, we know that they are determining this property by the amount of gold used for production. This analysis gives the exact number of gold nanoparticles per milliliter. Before we ship the product we measure the optical density with our NIST traceable UV-VIS spectrophotometer. We believe this is the best way to sell our products because this is the only way to truly measure the concentration (number) of the gold nanoparticles you are purchasing. OD-mL is short for Optical Density per milliliter. What is an OD-mL and why don't you sell by gold weight or molarity?
Gold Nanoparticle Frequently Asked Questions Important reference for frequently asked questions regarding gold nanoparticles General
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