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Formation of silver nanoparticles created in situ in an amphiphilic block copolymer film
Author(s) -
Park Jung Tae,
Koh Joo Hwan,
Lee Kyung Ju,
Seo Jin Ah,
Min Byoung Ryul,
Kim Jong Hak
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28261
Subject(s) - copolymer , materials science , polymer chemistry , amphiphile , atom transfer radical polymerization , silver nanoparticle , nanoparticle , fourier transform infrared spectroscopy , chemical engineering , polymer , polystyrene , polymerization , transmission electron microscopy , dynamic light scattering , nanotechnology , composite material , engineering
Abstract In this work, silver nanoparticles were synthesized with an amphiphilic diblock copolymer, polystyrene‐ block ‐poly(1‐vinyl‐2‐pyrrolidone) (PS‐ b ‐PVP), as a template film. First, microphase‐separated amphiphilic PS‐ b ‐PVP (70 : 30 wt %) was synthesized through atom transfer radical polymerization. The self‐assembled block copolymer film was used to template the growth of silver nanoparticles by the introduction of a silver trifluoromethanesulfonate precursor and an ultraviolet irradiation process. The in situ formation of silver nanoparticles with an average size of 4–6 nm within the block copolymer template film was confirmed with transmission electron microscopy, ultraviolet–visible spectroscopy, and wide‐angle X‐ray scattering. Fourier transform infrared spectroscopy also demonstrated the selective incorporation and in situ formation of silver nanoparticles within the hydrophilic poly(1‐vinyl‐2‐pyrrolidone) domains, which were mostly due to the stronger interaction strength of the silver with the carbonyl oxygens of poly(1‐vinyl‐2‐pyrrolidone) in the block copolymer. This work provides a simple route for the in situ synthesis of silver nanoparticles within a polymer film. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci 2008