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Träfflista för sökning "WAKA:ref ;pers:(Inganäs Olle);pers:(Hamedi Mahiar);pers:(Herland Anna)"

Sökning: WAKA:ref > Inganäs Olle > Hamedi Mahiar > Herland Anna

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1.
  • Björk, Per, et al. (författare)
  • Biomolecular nanowires decorated by organic electronic polymers
  • 2010
  • Ingår i: JOURNAL OF MATERIALS CHEMISTRY. - 0959-9428. ; 20:12, s. 2269-2276
  • Tidskriftsartikel (refereegranskat)abstract
    • We demonstrate the shaping and forming of organic electronic polymers into designer nanostructures using biomacromolecules. In order to create nanowires, nanohelixes and assemblies of these, we coordinate semiconducting or metallic polymers to biomolecular polymers in the form of DNA and misfolded proteins. Optoelectronic and electrochemical devices utilizing these shaped materials are discussed.
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2.
  • Hamedi, Mahiar, et al. (författare)
  • Electrochemical Devices Made from Conducting Nanowire Networks Self-Assembled from Amyloid Fibrils and Alkoxysulfonate PEDOT
  • 2008
  • Ingår i: Nano letters (Print). - 1530-6984. ; 8:6, s. 1736-1740
  • Tidskriftsartikel (refereegranskat)abstract
    • Proteins offer an almost infinite number of functions and geometries for building nanostructures. Here we have focused on amyloid fibrillar proteins as a nanowire template and shown that these fibrils can be coated with the highly conducting polymer alkoxysulfonate PEDOT through molecular self-assembly in water. Transmission electron microscopy and atomic force microscopy show that the coated fibers have a diameter around 15 nm and a length/thickness aspect ratio >1:1000 . We have further shown that networks of the conducting nanowires are electrically and electrochemically active by constructing fully functional electrochemical transistors with nanowire networks, operating at low voltages between 0 and 0.5 V.
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3.
  • Karlsson, Roger, et al. (författare)
  • Iron-Catalyzed Polymerization of Alkoxysulfonate-Functionalized 3,4-Ethylenedioxythiophene Gives Water-Soluble Poly(3,4-ethylenedioxythiophene) of High Conductivity
  • 2009
  • Ingår i: Chemistry of Materials. - American Chemical Society (ACS). - 0897-4756. ; 21:9, s. 1815-1821
  • Tidskriftsartikel (refereegranskat)abstract
    • Chemical polymerization of a 3,4-ethylenedioxythiophene derivative bearing a sulfonate group (EDOTS) is reported. The polymer, PEDOT-S, is fully water-soluble and has been produced by polymerizing EDOT-S in water, using Na2S2O8 and a catalytic amount of FeCl3. Elemental analysis and XPS measurements indicate that PEDOT-S is a material with a substantial degree of self-doping, but also contains free sulfate ions as charge-balancing counterions of the oxidized polymer. Apart from self-doping PEDOT-S, the side chains enable full water solubility of the material; DLS studies show an average cluster size of only 2 nm. Importantly, the solvation properties of the PEDOT-S are reflected in spin-coated films, which show a surface roughness of 1.2 nm and good conductivity (12 S/cm) in ambient conditions. The electro-optical properties of this material are shown with cyclic voltammetry and spectroelectrochemical experiment reveals an electrochromic contrast (similar to 48% at lambda(max) = 606 nm).
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  • Resultat 1-3 av 3
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Fahlman, Mats, (1)
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