Fig. 2From: One-step, Rapid and Green Synthesis of Multifunctional Gold Nanoparticles for Tumor-Targeted Imaging and Therapya UV-Visible absorption spectra and the photo images of DOX–GNPs (a), NLS-GNPs (b), and DRN-GNPs (c). b UV-Visible absorption spectra of basic DOX, RGD peptides, NLS peptides, and the supernatant of DRN-GNPs. c FTIR spectra of NLS peptides, NLS-GNPs, and DRN-GNPs. The distance between the GNPs’ spectrum and NLS peptides’ spectrum are enlarged for the contrast distinctlyBack to article page