Immobilization of functional oxide nanoparticles on silicon surfaces via Si-C bonded polymer brushes.
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.
Xu
F J
FJ
Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260.
Wuang
S C
SC
Zong
B Y
BY
Kang
E T
ET
Neoh
K G
KG
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*
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