Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Formation of Silver Nanoparticles in Polystyrene-b-Poly(oxyethylene methacrylate) Block Copolymer Membranes

Polystyrene-b-Poly(oxyethylene methacrylate) 블록 공중합체 막을 이용한 은 나노입자 생성

  • Koh, Joo-Hwan (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Seo, Jin-Ah (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Roh, Dong-Kyu (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Kim, Jong-Hak (Department of Chemical and Biomolecular Engineering, Yonsei University)
  • 고주환 (연세대학교 화공생명공학과) ;
  • 서진아 (연세대학교 화공생명공학과) ;
  • 노동규 (연세대학교 화공생명공학과) ;
  • 김종학 (연세대학교 화공생명공학과)
  • Received : 2010.01.26
  • Accepted : 2010.03.16
  • Published : 2010.03.30
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Abstract

A diblock copolymer of polystyrene-b-poly(oxyethylene methacrylate) (PS-b-POEM) was synthesized via atom transfer radical polymerization (ATRP), as revealed by FT-IR spectroscopy. The self-assembled block copolymer membrane was prepared and used to template the growth of silver nanoparticles in the solid state by the introduction of $AgCF_3SO_3$ precursor and UV irradiation process. Transmission electron microscopy (TEM) and UV-visible spectroscopy confirmed the in situ formation of silver nanoparticles within the block copolymer membranes, and the size of nanoparticles were controlled by adjusting the moiety of hydrophilic POEM domains. PS-b-POEM block copolymer with a lower POEM content was effective in generating smaller size of metal nanoparticles.

원자전달 라디칼 중합을 이용하여 polystyrene-b-poly(oxyethylene methacrylate) (PS-b-POEM) 블록 공중합체를 합성하고, FT-IR을 통해 중합이 성공적으로 이루어졌음을 확인하였다. 또한 자기 조립된 블록 공중합체 막을 제조한 후, 전구체 $AgCF_3SO_3$ 도입과 UV 조사를 통해 고체상에서 은 나노입자를 성장시켰다. TEM 전자현미경과 UV-visible 분광학 분석을 통해 블록 공중합체 막의 내부에 은 나노입자가 형성된 것을 확인하였고, 또한 친수성 POEM 영역의 함량을 조절함으로써 나노입자의 크기를 조절할 수 있었다. 금속 나노입자를 제조하는 데 있어서 POEM 함량이 적은 블록 공중합체가 더 효과적임을 확인하였다.

Keywords

References

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