title: Manipulating the solubility of gold nanoparticles reversibly and preparation of water-soluble sphere nanostructure through micellar-like solubilization.
abstract: On the basis of micellar solubilization, a strategy tuning the solubility of gold nanoparticles reversibly was developed. Hydrophobic gold nanoparticles stabilized by octadecylamine (ODA-gold) solubilized in the micellar-like core of poly(vinylpyrrolidone) (PVP) in water to form gold nanoparticles with protective multilayer induced by reduction of interfacial energy. Interestingly, upon redispersing in chloroform, the PVP micellar-like structure can break down and the ODA-gold can be released again. By changing the ratio of PVP/ODA, size-controllable hydrophilic spherical assembly can be prepared. On the basis of the observation of transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR), a reasonable mechanism is interpreted thermodynamically.
authors.affiliation: Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Yang
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Jinru
authors.initials: J
authors.lastname: Li
authors.forename: Jin
authors.initials: J
authors.lastname: Mu
authors.forename: Huilin
authors.initials: H
authors.lastname: Rong