Immobilization of functional oxide nanoparticles on silicon surfaces via Si-C bonded polymer brushes

J Nanosci Nanotechnol. 2006 May;6(5):1458-63. doi: 10.1166/jnn.2006.313.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Binding Sites
  • Carbon Compounds, Inorganic / chemistry*
  • Cross-Linking Reagents / chemistry
  • Crystallization / methods*
  • Materials Testing
  • Membranes, Artificial
  • Molecular Conformation
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure*
  • Nanotechnology / methods
  • Oxides / chemistry*
  • Particle Size
  • Polymers / chemistry
  • Polymethacrylic Acids / chemistry*
  • Silicon / chemistry*
  • Silicon Compounds / chemistry*

Substances

  • Carbon Compounds, Inorganic
  • Cross-Linking Reagents
  • Membranes, Artificial
  • Oxides
  • Polymers
  • Polymethacrylic Acids
  • Silicon Compounds
  • polymethacrylic acid
  • silicon carbide
  • Silicon