title: Platinum-nanoparticle-supported core--shell polymer nanospheres with unexpected water stability and facile further modification.
abstract: Core-shell nanospheres (CSNSs) with hydrophobic cores and hydrophilic shells were fabricated via a simple mini-emulsion polymerization for the stabilization of platinum nanoparticles (Pt-NPs). The CSNSs showed extremely high loading capacity of Pt-NPs (the largest loading amount of the Pt-NPs was about 49.2 wt%). Importantly, the Pt-NPs/CSNSs nanocomposites had unexpected stability in aqueous solution. DLS results revealed that the CSNSs loaded with Pt-NPs exhibited almost no aggregation after standing for a long time . However, the Pt-NPs immobilized on the CSNSs were not straitlaced: they could transport and redistribute between CSNSs freely when the environmental temperature was higher than the melting point of the CSNS shell. Owing to their excellent stability in aqueous solution, the surface of the Pt-NPs/CSNSs nanocomposites could be further decorated easily. For example, polyaniline (PANI)-coated Pt-NPs/CSNSs, nickel (Ni)-coated Pt-NPs/CSNSs and PANI/Pt-NPs dual-layer hollow nanospheres were facilely fabricated from the Pt-NPs/CSNS nanocomposites.
authors.affiliation: College of Materials, Xiamen University, Xiamen 361005, People's Republic of China.
authors.forename: Conghui
authors.initials: C
authors.lastname: Yuan
authors.forename: Yiting
authors.initials: Y
authors.lastname: Xu
authors.forename: Weiang
authors.initials: W
authors.lastname: Luo
authors.forename: Birong
authors.initials: B
authors.lastname: Zeng
authors.forename: Wuhui
authors.initials: W
authors.lastname: Qiu
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.forename: Huiling
authors.initials: H
authors.lastname: Huang
authors.forename: Lizong
authors.initials: L
authors.lastname: Dai
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry; D004355:Drug Stability; D004655:Emulsions / Q000737:chemistry; D057927:Hydrophobic and Hydrophilic Interactions; D053768:Metal Nanoparticles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D054118:Nanospheres / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D010984:Platinum / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D004655:Emulsions; C416807:polyaniline; D010984:Platinum; D009532:Nickel