Tuning of morphological and antibacterial properties of poly(3,4-ethylenedioxythiophene): peroxodisulfate by methyl violet

0573541 - ÚMCH 2024 RIV CH eng J - Journal Article
Gupta, Sonal - Acharya, Udit - Thottappali, Muhammed Arshad - Pištěková, H. - Morávková, Zuzana - Hromádková, Jiřina - Taboubi, Oumayma - Pfleger, Jiří - Humpolíček, P. - Bober, Patrycja
Tuning of morphological and antibacterial properties of poly(3,4-ethylenedioxythiophene): peroxodisulfate by methyl violet.
Polymers. Roč. 15, č. 14 (2023), č. článku 3026. E-ISSN 2073-4360
Institutional support: RVO:61389013
Keywords : poly(3,4-ethylenedioxythiophene) * methyl violet * antibacterial properties
OECD category: Polymer science
Impact factor: 5, year: 2022
Method of publishing: Open access
https://www.mdpi.com/2073-4360/15/14/3026

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.
Permanent Link: https://hdl.handle.net/11104/0344557