Gold Spheres Citrate Coated

We are offering standard monodispersed spherical Gold Nanoparticles for biological and medical applications with different surface coatings, such as citrate, PVP, PEG, b-PEI, chitosan, beta-cyclodextrin, BSA and others.

For various applications, we can functionalize the surface of the nanoparticles with such substances as streptavidin, hyaluronic acid, collagen, cysteine, alginate, glutathione, proteins, and many others on your demand.

For cosmetic and cosmeceutical applications, various active ingredients and plants extracts can be used as surface coating

  This type of gold nano-spheres represents an economic solution for the nanoparticles to be used as biosensors in various quick-tests, also called Lateral Flow Assays (LFA). For these applications, we offer gold nanoparticles in most commonly used sizes (20nm, 30nm and 40nm, provided at highest concentration OD=20. These nanoparticles are characterized by spherical form and an absence of sharp edges and odd shapes, thus offering an ideal surface for modification. To be easily adaptable to various applications, we offer ‘’lateral-flow-easy’’ nanoparticles both with citrate surface and also having PEG5000-carboxylated surface coating. Accordingly, our citrate-coated gold nanospheres can be used when an easy replacement of the surface coating by passive adsorption is required, and the carboxylated surface can be used for direct conjugation of the antibodies, providing gold nanoparticles with specific recognition properties.

    We are offering Gold Nano-spheres with nearly perfect spherical form and ultra-high monodispersity (standard variation CV ≤3% for sizes larger than 10nm). This represents the best monodispersity available on the market. The nanoparticles have positively charged CTAC surface, and can be used for standardization and control of the nanoparticles parameters. Customized diameters/concentrations/PEG spacer sizes are available on request.  

     We offer nanoparticles products with increased surface area: Nanoflowers and Nanostars. We can fine tune the ,,core diameter/branch length’’ ratio and UV-vis peak position according to customers’ requirements.

Various surface coatings are available and can be provided same as for Gold Nanospheres