title: Metal-polymer hybrid colloidal particles with an eccentric structure.
abstract: We have synthesized metal-polymer hybrid colloidal particles characterized by an eccentric structure by precipitation polymerization in the presence of metal colloids. The key to the formation of an eccentric core-shell structure was to introduce metal colloids a few minutes after (rather than before) starting the polymerization. The hybrid particles were uniform in size, and each one of them contained only one metal nanoparticle at its surface after the experimental procedures had been optimized. This method could be extended to a number of different metal colloids stabilized by small molecules, and the yield was found to be more or less independent of the size of the metal nanoparticles. In addition, the position of the metal nanoparticle in the hybrid particle could be controlled by changing the concentration of cross-linker, and the overall size of the hybrid particles could be altered by solvent treatment. Because of the simplicity of this procedure, it should be possible to use it for the large-scale production of colloidal particles having a hybrid, complex structure.
authors.affiliation: Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA.
authors.forename: Akira
authors.initials: A
authors.lastname: Ohnuma
authors.forename: Eun Chul
authors.initials: EC
authors.lastname: Cho
authors.forename: Majiong
authors.initials: M
authors.lastname: Jiang
authors.forename: Bunsho
authors.initials: B
authors.lastname: Ohtani
authors.forename: Younan
authors.initials: Y
authors.lastname: Xia
mesh_terms: D011232:Chemical Precipitation; D003102:Colloids / Q000138:chemical synthesis*; D003432:Cross-Linking Reagents; D008670:Metals / Q000737:chemistry*; D008722:Methods; D015394:Molecular Structure; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D012997:Solvents
chemical_list: D003102:Colloids; D003432:Cross-Linking Reagents; D008670:Metals; D011108:Polymers; D012997:Solvents