Preparation and Surface Plasmon Resonance of Polymer/Silver Hybrid Nanoparticles

초록

Hybrid polymeric nanoparticles containing metal silver nanoparticles were successfully synthesized. Monodisperse poly(styrene-co-vinylbenzyl chloride) (PSBC) nanoparticles with an average diameter of 100-200 nm were synthesized by surfactant-free emulsion polymerization. The chlorine group on the surfaces of the PSBC nanoparticles was converted into thiol group by surface modification with thiourea. The thiol groups of the surface-modified nanoparticles with thiol group (PSBSH) were reacted with Ag+ ions to form Ag-S bonds and then produce the PSBAg hybrid nanoparticles containing Ag nanoparticles, intercalatedon to the surfaces through reduction. The successful immobilization of Ag onto the surface of the polymer nanoparticles was confirmed using various characterization tools. The surface plasmon resonance (SPR) was observed from the Ag nanoparticles of the PSBAg nanoparticles. By varying the size of the polymer nanoparticles and the amount of silver adhered onto them, the surface plasmon resonance of the nanocomposite materials was investigated.

키워드