Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Structural Analysis of Conductive Polypyrroles Synthesized in an Ionic Liquid

  • Song, Eun-Ah (School of Advanced Materials Engineering, Kookmin University) ;
  • Jung, Woo-Gwang (School of Advanced Materials Engineering, Kookmin University) ;
  • Ihm, Dae-Woo (Department of Semiconductor and Display Engineering, Hoseo University) ;
  • Kim, Jin-Yeol (School of Advanced Materials Engineering, Kookmin University)
  • Published : 2009.05.20
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Abstract

Nano-structured conducting polypyrroles were synthesized in the ionic liquids (ILs) based on 1-alkyl-3-methylimidazolium family with tetrachloroferrate as an anion ($C_n\;mim\;[FeCl_4]\;with\;n\;=\;4,\;8,\;and\;12$). The polypyrrole nanostructures synthesized in ILs were formed as spherical shapes. For ionic liquids with alkyl side chain length $C_4,\;C_4\;mim\;[FeCl_4]$, the size of particles was ranged around 60-nm with a relatively narrow size distribution. As the length of alkyl chain increases, the particle sizes become larger and their distributions become wider. The self-assembled local structures in the solvent ionic liquids are likely to serve as templates of highly organized nano-structured polymers. The length of the alkyl chain in ionic liquids seems to affect these local structures.

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