title: Reversible formation and dissolution of gold nanoparticles through turning on and off sequences of UV light.
abstract: Reversible formation and dissolution of gold nanoparticles through turning on and off UV light was reported. Gold ions (Au(3+)) were reduced to monodispersed gold nanoparticles by UV irradiation from a mixture of comb-like poly(oxyethylene)s and a gold salt. The prepared gold nanoparticles dissolved to yield gold ions (Au(3+)) when the UV light was switched off. Such formation and dissolution could be repeated persistently by turning the UV light on and off repeatedly.
authors.affiliation: Department of Chemical and Biological Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-744, South Korea.
authors.forename: Ki-Hyun
authors.initials: KH
authors.lastname: Kim
authors.forename: Jong-Uk
authors.initials: JU
authors.lastname: Kim
authors.forename: Sang-Ho
authors.initials: SH
authors.lastname: Cha
authors.forename: Jong-Chan
authors.initials: JC
authors.lastname: Lee