title: Immobilization of functional oxide nanoparticles on silicon surfaces via Si-C bonded polymer brushes.
abstract: A method for immobilizing and mediating the spatial distribution of functional oxide (such as SiO2 and Fe3O4) nanoparticles (NPs) on (100)-oriented single crystal silicon surface, via Si-C bonded poly(3-(trimethoxysilyl)propyl methacrylate) (P(TMSPM)) brushes from surface-initiated atom transfer radical polymerization (ATRP) of (3-(trimethoxysilyl)propyl methacrylate) (TMSPM), was described. The ATRP initiator was covalently immobilized via UV-induced hydrosilylation of 4-vinylbenzyl chloride (VBC) with the hydrogen-terminated Si(100) surface (Si-H surface). The surface-immobilized Fe3O4 NPs retained their superparamagnetic characteristics and their magnetization intensity could be mediated by adjusting the thickness of the P(TMSPM) brushes.
authors.affiliation: Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260.
authors.forename: F J
authors.initials: FJ
authors.lastname: Xu
authors.forename: S C
authors.initials: SC
authors.lastname: Wuang
authors.forename: B Y
authors.initials: BY
authors.lastname: Zong
authors.forename: E T
authors.initials: ET
authors.lastname: Kang
authors.forename: K G
authors.initials: KG
authors.lastname: Neoh
mesh_terms: D000327:Adsorption; D001665:Binding Sites; D017554:Carbon Compounds, Inorganic / Q000737:chemistry*; D003432:Cross-Linking Reagents / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*; D017655:Silicon Compounds / Q000737:chemistry*
chemical_list: D017554:Carbon Compounds, Inorganic; D003432:Cross-Linking Reagents; D008567:Membranes, Artificial; D010087:Oxides; D011108:Polymers; D011109:Polymethacrylic Acids; D017655:Silicon Compounds; C030613:polymethacrylic acid; C022088:silicon carbide; D012825:Silicon