American Chemical Society
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Isolation and Characterization of Monodisperse Core–Shell Nanoparticle Fractions

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posted on 2015-10-20, 00:00 authored by Antoni Sánchez-Ferrer, Randy P. Carney, Francesco Stellacci, Raffaele Mezzenga, Lucio Isa
Monodispersity is a key property to control the self-assembly of colloidal particles, and is typically reached after fine-tuning of the synthesis conditions. Monodisperse particle fractions can also be separated from polydisperse suspensions via ultracentrifugation. This paper demonstrates the capability of isolating and characterizing suspensions of core–shell iron oxide-polymer nanoparticles with extremely low polydispersity (p < 0.01) and, thus, of complementing nanoparticle synthetic approaches in the pursuit of highly monodisperse materials.

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