Synthesis and Characterization of Novel Nanomaterials for SERS Biomedical / Environmental Application

Abstract

In this study, a simple green method was used to synthesize functionalized silver nanoparticles (Ag NP) as a surface-enhanced Raman scattering (SERS) substrate for dopamine (DA) detection. In this method, polyethylene glycol (PEG) was functionalized on Ag NPs to prepare the size of the nanoparticles (NP) in a uniform and controlled manner. Optical and structural properties of functionalized nanoparticles were characterized. The Raman spectra of the prepared PEG-Ag SERS substrate clearly showed an increase in the SERS signal of DA. The improved functionalized SERS substrate could potentially be a sensitive SERS substrate for the detection of various neurotransmitters for biomedical application.