Synthesis of Well-Defined Gold Nanoparticles Using Pluronic: The Role of Radicals and Surfactants in Nanoparticles Formation.

ABSTRACT: Synthesis of gold nanoparticles (GNP) by reacting chloroauric acid (HAuCl4) and Pluronic F127 was thoroughly investigated. The rate of reduction of HAuCl4 and the yield and morphology of GNP strongly depended on the concentration of the reactants and sodium chloride, as well as pH and temperature. Upon completion of the reaction heterogeneous mixtures of small GNP of defined shape and Pluronic aggregates were formed. GNP were separated from the excess of Pluronic by centrifugal filtration. Under optimized conditions the GNP were small (ca. 80 nm), uniform (PDI ~0.09), strongly negatively charged (ζ-potential -30 mV) and nearly spherical. They were stable in distilled water and phosphate-buffered saline. Purified GNP contained ~13% by weight of an organic component, yet presence of polyprop

SUBMITTER: Sokolsky-Papkov M 

PROVIDER: S-EPMC6835800 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature