Next Article in Journal
Synthesis of Selenium-Containing Polystyrene Microspheres and Using as Catalyst for Oxidation of Acrolein
Next Article in Special Issue
Development and Progression of Polymer Electrolytes for Batteries: Influence of Structure and Chemistry
Previous Article in Journal
Polytriphenylamine and Poly(styrene-co-hydroxystyrene) Blends as High-Performance Anticorrosion Coating for Iron
Previous Article in Special Issue
Nanosponge-Based Composite Gel Polymer Electrolyte for Safer Li-O2 Batteries
 
 
Article

Interactions in Electrodeposited Poly-3,4-Ethylenedioxythiophene—Tungsten Oxide Composite Films Studied with Spectroelectrochemistry

1
Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia
2
Institute of Chemistry, AG Elektrochemie, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
3
State Key Laboratory of Materials-Oriented Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing 211816, China
*
Author to whom correspondence should be addressed.
Academic Editor: Francesco Lufrano
Polymers 2021, 13(10), 1630; https://doi.org/10.3390/polym13101630
Received: 27 March 2021 / Revised: 13 May 2021 / Accepted: 14 May 2021 / Published: 18 May 2021
(This article belongs to the Special Issue Advanced Functional Polymers for Energy Applications)
Cyclic voltammograms and optical absorption spectra of PEDOT/WO3 composite films were recorded in order to identify possible interactions and modes of improved performance of the composite as compared to the single materials. Changes in the shape of redox peaks related to the W(VI)/W(V) couple in the CVs of WO3 and the composite PEDOT/WO3 films indicate electrostatic interactions between the negatively charged tungsten oxide species and the positively charged conducting polymer. Smaller peak separation suggests a more reversible redox process due to the presence of the conducting polymer matrix, accelerating electron transfer between tungsten ions. Electronic absorption spectra of the materials were analyzed with respect to changes of the shapes of the spectra and characteristic band positions. There are no noticeable changes in the position of the electronic absorption bands of the main chromophores in the electronic spectra of the composite film. Obviously, the interactions accelerating the redox performance do not show up in the optical spectra. This suggests that the existing electrostatic interactions in the composite do not significantly change the opto-electronic properties of components of the composite but resulted in the redistribution of fractions of polaron and bipolaron forms in the polymer. View Full-Text
Keywords: electronic absorption spectra; spectroelectrochemistry; poly-3,4-ethylenedioxythiophene film; tungsten oxide; composite film; propylene carbonate solutions electronic absorption spectra; spectroelectrochemistry; poly-3,4-ethylenedioxythiophene film; tungsten oxide; composite film; propylene carbonate solutions
Show Figures

Figure 1

MDPI and ACS Style

Efremova, A.O.; Tolstopjatova, E.G.; Holze, R.; Kondratiev, V.V. Interactions in Electrodeposited Poly-3,4-Ethylenedioxythiophene—Tungsten Oxide Composite Films Studied with Spectroelectrochemistry. Polymers 2021, 13, 1630. https://doi.org/10.3390/polym13101630

AMA Style

Efremova AO, Tolstopjatova EG, Holze R, Kondratiev VV. Interactions in Electrodeposited Poly-3,4-Ethylenedioxythiophene—Tungsten Oxide Composite Films Studied with Spectroelectrochemistry. Polymers. 2021; 13(10):1630. https://doi.org/10.3390/polym13101630

Chicago/Turabian Style

Efremova, Aleksandra O., Elena G. Tolstopjatova, Rudolf Holze, and Veniamin V. Kondratiev. 2021. "Interactions in Electrodeposited Poly-3,4-Ethylenedioxythiophene—Tungsten Oxide Composite Films Studied with Spectroelectrochemistry" Polymers 13, no. 10: 1630. https://doi.org/10.3390/polym13101630

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop