Nanopartz™ Accurate™ Spherical Gold Nanoparticles are spherical gold nanoparticles manufactured using proprietary methods that result in exact sizes, highly monodisperse sizes and shapes, long shelf lives, along with significantly improved reactivity. Diameters from 1.8nm up to 1.5microns with size accuracies up to 0.1nm and size variances less than 2% at sizes larger than 40nm. Peak SPRs range from 505nm to 612nm. Every batch is completely characterized including size, monodispersity, aggregation, residual chemicals, and concentration. A Certificate of Analysis (COA) is provided for every order exhibiting TEM and UV-VIS images and data, as well as DLS data. Every product is in stock (99%) and is shipped same day. This product comes in two concentrations, regular OD=1 (0.05mg/mL), and highly concentrated OD=100 (5mg/mL) in DI water, purified of residual reactants to <0.1%. These particles are are available non-covalently capped with our own proprietary carboxylic acid, citrate, and many other adsorbed polymers. These capping agents are readily replaced with covalent and charge chemistries.
These particles are not manufactured in citrate. Citrate and the other ligands are functionalized after manufacturing allowing for a minimal, controlled amount of ligand to be used.
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Product Image Left to Right, A11-1.8 to A11-1500
Scattering Image Left to Right, A11-1.8 to A11-1500