Abstract
In this paper, silica-coated Au nanoparticles (Au@SiO 2) were prepared by the technique of vortex mixing. Subsequently, these monodisperse Au@SiO 2 nanoparticles were functionalized by the silane reagents 3-aminopropyltriethoxysilane (APS) and 3-mercaptopropyltriethoxysilane (MPTS) respectively. Then, these NH 2-terminated and SO 3 2−-terminated Au@SiO 2 nanoparticles were respectively assembled onto the substrates, which have been patterned with different self-assembly monolayers (SAMs), to form close-packed two-dimensional Au@SiO 2 nanoparticle arrays by electrostatic interactions. The morphologies and the optical properties of Au@SiO 2 nanoparticles with different silica-shell thicknesses were characterized by TEM and UV–vis. The compositions and zeta potentials of the functionalized Au@SiO 2 nanoparticles were examined by X-ray photoelectron spectroscopy (XPS) and dynamic light scattering (DLS). The morphologies of the patterns formed on different templates were characterized by atomic force microscopy (AFM).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
