Research Article

PEGylated Gold Nanoparticles with Interesting Plasmonic Properties Synthesized Using an Original, Rapid, and Easy-to-Implement Procedure

Figure 6

SER spectra of R6G (a), 5-FU (b), and DOX (c) acquired on solid substrates produced from as-synthesized PEG-AuNPs, using an excitation wavelength of 785 nm. The analyte concentration in each case is 10−3 M. Each spectrum is the mean of 625 individual spectra, acquired on different regions of the substrate.