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

Figure 4

SER spectra of MB at different molar concentrations, acquired using PEG-AuNPs as substrate: (i) 10⁻⁷ M, (ii) 10⁻⁶ M, (iii) 10⁻³ M, (iv) 10⁻⁵ M, and (v) 10⁻⁴ M.