| Autor: |
Gupta S; Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic., Acharya U; Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic., Thottappali MA; Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic., Pištěková H; Centre of Polymer Systems, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic., Morávková Z; Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic., Hromádková J; Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic., Taboubi O; Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic., Pfleger J; Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic., Humpolíček P; Centre of Polymer Systems, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic.; Department of Lipids, Surfactants and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic., Bober P; Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic. |
| Abstrakt: |
This study demonstrates a one-step synthesis of poly(3,4-ethylenedioxythiophene) (PEDOT) in the presence of the methyl violet (MV) dye. The structural properties of PEDOT:peroxodisulfate were studied using Raman and MALDI-TOF spectroscopies. The use of the MV dye in the polymerization process resulted in a change in the typical irregular morphology of PEDOT:peroxodisulfate, leading to the formation of spherical patterns. SEM and TEM analyses revealed that increasing the dye concentration can produce larger spherical aggregates probably due to the hydrophobic and π - π interactions. These larger aggregates hindered the charge transport and reduced the electrical conductivity. Interestingly, at higher dye concentrations (0.05 and 0.075 M), the PEDOT:peroxodisulfate/MV films exhibited significantly improved antibacterial activity against Staphylococcus aureus and Escherichia coli . Furthermore, the PEDOT:peroxodisulfate films with the incorporated MV dye exhibited a well-defined and repeatable redox behavior. The remarkable amalgamation of their optical, electrochemical and antibacterial properties provides the PEDOT:peroxodisulfate/MV materials with an immensely diverse spectrum of applications, including in optical sensors and medical devices. |
