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Size and Shape of Gold Nanoparticles in Toluene via SAXS

The size and shape of colloidal gold nanoparticles was studied using the SAXSpace system.

Introduction

The demand for colloidal gold nanoparticles (AuNP), famous for their vibrant colors, has increased in the past decades due to their remarkable properties. Their diverse applications range from organic photovoltaics, therapeutic agents, drug delivery, functional and medical surfaces to sensors and catalysis.

There are several routes known to synthesize AuNP with different stabilizing shells. The chemical nature of those shells determines the solvent in which the colloidal gold can be electrostatically or sterically stabilized and stays in its colloidal form.

Small-angle X-ray scattering (SAXS) is an ideal method to characterize nanosized particle systems like AuNP dispersions. SAXS provides statistical, i.e. representative structural data like the size and shape of the particles.

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