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Electrical and spectroelectrochemical investigation of thiophene-based donor-acceptor copolymers with 3,4-ethylenedioxythiophene
- Source :
- Polímeros, Vol 30, Iss 1 (2020), Polímeros, Volume: 30, Issue: 1, Article number: e2020001, Published: 11 MAY 2020, Polímeros v.30 n.1 2020, Polímeros (São Carlos. Online), Associação Brasileira de Polímeros (ABPol), instacron:ABPO
- Publication Year :
- 2020
- Publisher :
- FapUNIFESP (SciELO), 2020.
-
Abstract
- This work reports the spectroelectrochemical and electrical behavior of electropolymerized donor-acceptor like (D-A) copolymer films, based on 3,4-ethylenedioxythiophene (EDOT) and beta-substituted electron-acceptor thiophenes. Initially, the copolymer films were deposited on indium tin oxide substrates, which spectroelectrochemistry measurements were carried out with an UV-Vis spectrophotometer. Hence, it was possible to observe the electrochromic properties of these materials, visualizing the color changing towards different potentials applied. The experiments have shown that these D-A like copolymers presented good electrochromic properties, such as optical contrast, coloration efficiency, and switching times. Additionally, films prepared on a platinum working electrode were investigated by electrochemical impedance spectroscopy, which has shown the electrical behavior of those copolymers and their potential as candidates to capacitive devices building. Therefore, the combination of electron-donor EDOT with those electron-acceptor monomers is indeed a useful strategy to tailoring and fine-tuning the physicochemical properties of polythiophenes with innovative applications.
- Subjects :
- polythiophenes
010407 polymers
Materials science
Working electrode
Chemical technology
Capacitive sensing
Organic Chemistry
donor-acceptor copolymers
chemistry.chemical_element
spectroelectrochemistry
TP1-1185
01 natural sciences
0104 chemical sciences
Indium tin oxide
Dielectric spectroscopy
electrical behavior
chemistry.chemical_compound
chemistry
Chemical engineering
Electrochromism
Thiophene
Copolymer
Chemical Engineering (miscellaneous)
Platinum
Subjects
Details
- ISSN :
- 16785169 and 01041428
- Volume :
- 30
- Database :
- OpenAIRE
- Journal :
- Polímeros
- Accession number :
- edsair.doi.dedup.....fa755986ed7edd2d8034aa1f53898039