Preparation of SERS Active Substrates Based on Ag/Graphene/Polymer Nanocomposites
Nanocomposites of poly (BA/MMA) reinforced with up to 3 wt % grahene sheets were used as targets for laser ablation. The target was ablated using TEA CO2 laser with fluence of 1,00 J/cm2 and thin films of crosslinked polymer/graphene with large specific surface area were obtained. The polymer-graphene deposit was covered with silver nanoparticles by excimer laser ablation in order to prepare active substrates for Surface-Enhanced Raman Scattering (SERS). The nanocomposites were characterized by means of spectroscopy, microscopy and diffraction techniques. The SERS substrate performance was tested using Rhodamine 6G as a probe compound. Highly enhanced signal was achieved, and sensoric properties of the prepared substrates were demonstrated.
Evangelos Hristoforou and Dr. Dimitros S. Vlachos
G. Siljanovska Petreska et al., "Preparation of SERS Active Substrates Based on Ag/Graphene/Polymer Nanocomposites", Key Engineering Materials, Vol. 605, pp. 416-419, 2014