Facile Synthesis and Characterization of Au Nanoclusters-Silica Fluorescent Composite Nanospheres

Abstract EN

We developed a novel method for the synthesis of Au nanoclusters (NCs) silica fluorescent composite nanospheres by mixing the as-prepared bovine serum albumin (BSA) protected Au NCs with amino-modified silica spheres in acetate buffer solution.

The products were characterized by high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), fluorescent microscope imaging (FLMI), and dynamic light scattering (DLS) measurements.

The proposed method was simple, efficient, and inexpensive.

In addition, the composite nanospheres exhibited favorable water-dispersible, stable, and fluorescent properties, potentially leading to further applications in chemical and biological sensors.

A reasonable mechanism was also proposed for the formation of composite nanospheres.