Colloids and Surfaces A: Physicochemical and Engineering Aspects, 302, 51-57. (2007) Synthesis of Au, Ag and Au-Ag Alloy Nanoparticles in Aqueous Polymer Solution. The development of this process, which is benign for the environment, opens the possibility for many applications in the areas of renewable energy, medicine and biology. ![]() The average hydrodynamic size and the size distribution of the synthesized nanoparticles were obtained by dynamic light scattering. To obtain a better understanding of the coating conditions, high resolution transmission electron microscopy was used. The absorption peaks of the surface plasmon band show a clear red-shift due to size effect in the case of the silver surface, and a plasmon coupling effect, in the case of gold. Using the optical properties of metallic nanoparticles, surface plasmon resonance was determined by UV-Vis spectroscopy, and the values obtained for gold and silver were approximately 520 nm and 400 nm in wavelength, respectively. Gold nanoparticles were synthesized, and silver cations were then reduced on the nanoparticles. Surface-enhanced Raman scattering and fluorescence spectroscopies.Bimetallic gold-silver core-shell nanoparticles were prepared by chemical reduction in aqueous solution, following a method that was friendly to the environment, allowing us to use this for medicinal purposes.Construction of different types of plasmonic nanoparticles, such as core-shell, multishell and yolk-shell structures.Metal, semiconductor, and insulator nanoparticles with plasmonic shell.Surface modification of plasmonic nanoparticles with organic, inorganic and polymer etc.Synthesis and characterization of plasmonic CSNs.Areas of interest could include, but are not limited to: We welcome the submission of Original Research Articles, Reviews and Perspectives, covering recent advances in the synthesis and characterization of plasmonic CSNs, as well as their properties. The goal of this Research Topic is to highlight novel and effective methodologies for the preparation of plasmonic CSNs as well as discuss their physicochemical properties, especially SERS and SEF. ![]() Although various chemical synthetic strategies have been proposed for the successful preparation of CSNs, such as seed-mediated growth, galvanic replacement, and ionic exchange etc., it is still highly challenging to precisely synthesize plasmonic CSNs with the desired properties. The synthesis and characterization of plasmonic CSNs are the foundation and the key to the research efforts. On the other hand, for the CSNs with plasmonic shells, the core could be metal, semiconductor and insulator. For the CSNs with plasmonic core, the shell could be organic, inorganic or polymer. The plasmonic CSNs can be classified into two following categories: plasmonic core and plasmonic shell. Plasmonic silver- or gold-based core-shell nanoparticles (CSNs) have shown great potential in sensing, imaging, and catalysis, due to their unique localized surface plasmon resonance, surface-enhanced Raman scattering (SERS) and surface-enhanced fluorescence (SEF) properties. Core-shell nanoparticles are a type of biphasic material that usually consists of an inner core metallic structure and an outer shell made of organic ligands.
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