One-Phase Synthesis of Gold Nanoparticles with Varied Solubility

We developed a straightforward synthesis of gold nanoparticles with diameters in the range 2.1–7.0 nm which display solubility in both aqueous and nonpolar (toluene, chloroform) media. This versatile solubility of the nanoparticles is achieved by the use of a thiolated PEG capping agent. Their plasmon resonance band is virtually unaltered in different media.