Fast optical method for characterizing plasmonic nanoparticle adhesion on functionalized surfaces.

ABSTRACT: In this paper, a rapid optical method for characterizing plasmonic (gold) nanoparticle (AuNP) adhesion is presented. Two different methods were used for AuNP preparation: the well-known Turkevich method resulted in particles with negative surface charge; for preparing AuNPs with positive surface charge, stainless steel was used as reducing agent. The solid surface for adhesion was provided by a column packed with pristine or surface-modified glass beads. The size of the nanoparticles was studied by transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS); the surface charge of the components was determined by streaming potential measurements. The characterization of adhesion was performed in a flow system by UV-Vis spectroscopy. During the adhesion experiments, the ro

SUBMITTER: Merai L 

PROVIDER: S-EPMC7214493 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature