100ml of Highly Monodisperse AuNPs Colloids stabilized in 2.2mM Sodium Citrate. Concentration adjusted for every size to match 1.0 a.u. of Optical Density of the plasmon peak at its maximum of absorbance. Available sizes under this formulation: 5nm, 10nm, 20nm, 50nm. For different sizes and concetrations, check our Pandora Nanoparticles Menu or use our Nanoparticles Atelier service.
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Figure from Kinetically Controlled Seeded Growth Synthesis of Citrate-Stabilized Gold Nanoparticles of up to 200 nm: Size Focusing versus Ostwald Ripening Neus G. Bastús, Joan Comenge, and Víctor Puntes Langmuir 2011 27 (17), 11098-11105