Polymer Composites with Plasmonic Metal Nanoparticles |
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| Authors: | Ond?ej Dammer Blanka Vl?ková Klára Podhájecká Marek Procházka Ji?í Pfleger |
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| Institution: | 1. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic;2. Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic;3. Institute of Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic |
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| Abstract: | Summary: A two-phase method has been adapted for the preparation of polymer composites consisting of regioregular poly(3-octylthiophene-2,5-diyl) and Au or Ag nanoparticles. This work compares optical and morphological properties of nanocomposites formed by mixing metal organosols and polymer solution (type I composites) with nanocomposites formed by in-situ reduction in polymer solutions (type II composites). Both types contained very small metal nanoparticles (1–10 nm). Interestingly, more than ten-fold enhancement of Raman scattering of the polymer by the electromagnetic (EM) mechanism of SERS (surface-enhanced Raman scattering) resulted from the coupling of the polymer with plasmonic Au nanoparticles into a nanocomposite system. |
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| Keywords: | metal nanoparticles nanocomposites plasmonics π-conjugated polymers |
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