Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Silver Immobilization on Honeycomb-patterned Polyvinypyrrolidone thin Films via an Electroless Process

  • Kim, Bong-Seong (Department of Chemistry and Institute of Basic Science, Inje University) ;
  • Kim, Won-Jung (Department of Chemistry and Institute of Basic Science, Inje University) ;
  • Kim, Young-Do (Department of Environmental Science and Engineering, Inje University) ;
  • Huh, Do-Sung (Department of Chemistry and Institute of Basic Science, Inje University)
  • Received : 2011.08.08
  • Accepted : 2011.10.02
  • Published : 2011.12.20
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Abstract

Honeycomb-patterned polyvinypyrrolidone (PVP) thin films coated with nanometer-sized silver particles were prepared using honeycomb-patterned polystyrene (PS) template films fabricated by casting a polystyrene solution under humid condition. Silver was first metallized on the patterned PS films via silver nitrate ($AgNO_3$) reduction using tetrathiafulvalene (TTF) and a small amount of PVP as the reductant and dispersing agent, respectively. The effects of $AgNO_3$, TTF, and PVP solution concentrations during the reduction process in acetonitrile were determined to obtain a uniform silver-coated honeycomb-patterned PS film. Second, the silver-metallized patterned porous PS films were filled with high PVP concentration solutions via the spincoating process. Silver-coated patterned PVP films were obtained by peeling off the PVP layer from the template PS film after drying. The results show that the honeycomb-patterned PVP films uniformly coated with silver particles are conveniently obtained using the silver-coated patterned PS template, although the direct fabrication of these films using water droplets under humid conditions was not feasible because of the water solubility of PVP.

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