Fig. 5From: Variations in Spontaneous Assembly and Disassembly of Molecules on Unmodified Gold NanoparticlesDispersion and aggregation of GNP in the presence PEG-polymers. a Poly(ethylene glycol)-b-poly(acrylic acid) with Mw 2000, b polyoxyethylene with Mw 2000, and c polyoxyethylene with Mw 5000. Color Changes of GNP with the addition of NaCl. One optical density of GNP has been usedBack to article page