Fig. 5From: Gold Nanoparticle-Quantum Dot Fluorescent Nanohybrid: Application for Localized Surface Plasmon Resonance-induced Molecular Beacon Ultrasensitive DNA DetectionZP plot as a function of pH for a TGA-AuNPs, b MPA-AuNPs, c l-cysteine-AuNPs, d GSH-AuNPs, and e cysteamine-AuNPs. pH = 3, 5, 7, and 9. f Color of GSH-AuNPs solution taken under ambient light at different pHBack to article page