Electrosynthesises and characterizations of copolymers based on pyrrole and 3,4-ethylenedioxythiophene in aqueous micellar solution

Tao, Yijie; Cheng, Haifeng; Zheng, Wenzhong; Zhang, Zhaoyang; Liu, Dongqing

doi:10.1016/j.synthmet.2012.02.003

Cited by 24 publications

(23 citation statements)

References 28 publications

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“…For max = 400 nm, the PPy-co-PEDOT (2:1) copolymer had a colouration efficiency of 101.3 C −1 cm 2 , which is a reasonable value for an electrochromic material [35,41]. CE values between 74 and 147 cm 2 C −1 have previously been obtained for a Py:EDOT copolymer formed from micellar solutions [24].…”

Section: Electrochromic Switching Studiessupporting

confidence: 55%

“…That these FTIR peaks are present in the films demonstrates copolymer formation as described elsewhere [24,25].…”

Section: Electrochemical Characterization Of Ppy-co-pedotmentioning

confidence: 56%

“…Copolymers of Py and EDOT have previously been formed in aqueous micellar solution using a non-ionic surfactant, a mixture of ␣ dodecyl polyoxyethylene (8) ether and ␣ tetradecyl polyoxyethylene (8) ether [24]. In this as in other publications, the concentration of EDOT is greater than that of Py.…”

Section: Introductionmentioning

confidence: 71%

“…That there is a greater proportion of Py in the copolymer can be seen from the position of the max of the neutral → * transition which in this work is at 392 nm for the 1:1 and 2:1 Py: EDOT films, while it occurs at 417 nm for the 1:2 Py: EDOT copolymer. This is unlike the position of the neutral band at 508 nm for a 1:5 Py:EDOT ratio [25] and 542 nm for a py: EDOT ratio of 1:10 formed from the micellar solution [24] In Fig. 5 it can be seen that the absorbance increases well beyond the peak current compared to the voltammetric response at slow scan rate obtained in the same conditions.…”

Section: In-situ Spectroelectrochemistry Of Ppy-co-pedot Copolymersmentioning

confidence: 78%

“…PEDOT has been shown to be resistant against overoxidation in propylene carbonate, even with small levels of PPy (less than 0.15 mole fraction) present in a copolymer [26]. A copolymer of Py:EDOT at a ratio of 1:10 retained 80% of its electroactivity after 1000 cycles up to +0.7 V [24]. In addition a sandwich electrochromic device consisting of chemically synthesised PEDOT and PPy layers separated by a polyelectrolyte gel was found to lose only 8% of its phototropic % T response at 560 nm after 10,000 cycles where ±1.5 V was applied [37].…”

Section: Electrochromic Switching Studiesmentioning

confidence: 99%

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Electrodeposition and Characterisation of Copolymers Based on Pyrrole and 3,4-Ethylenedioxythiophene in BMIM BF4 Using a Microcell Configuration

Astratine

Magner

Cassidy³

et al. 2014

Electrochimica Acta

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a b s t r a c tElectrochemical copolymerization of pyrrole (Py) and 3,4-ethylenedioxythiophene (EDOT) was performed in an ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate, (BMIM BF4) employing a 'micro-cell' in order to use the materials efficiently. Characterization of the copolymers formed on an ITO substrate was performed for different Py: EDOT ratios (1:2, 1:1, 2:1) in both aqueous and ionic liquid electrolytes. The three copolymers displayed different absorbance spectra with max of the polaron species at 507, 540 and 580 nm for PPy-co-PEDOT ratios of 1:2, 1:1, 2:1, respectively. Electrochemical and spectroelectrochemical analysis revealed that the properties of the copolymer depend upon the Py/EDOT monomer ratio used. The copolymer PPy-co-PEDOT (2:1) displayed good stability, a switching time of 20 s and a colouration efficiency of 101.3 C-1cm2. The presence of Py in the copolymer stabilised the polaron state of the copolymer and allowed greater ion mobility compared to the PEDOT alone.

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Section: Electrochromic Switching Studiessupporting

confidence: 55%

“…That these FTIR peaks are present in the films demonstrates copolymer formation as described elsewhere [24,25].…”

Section: Electrochemical Characterization Of Ppy-co-pedotmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 71%

Section: In-situ Spectroelectrochemistry Of Ppy-co-pedot Copolymersmentioning

confidence: 78%

Section: Electrochromic Switching Studiesmentioning

confidence: 99%

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Electrodeposition and Characterisation of Copolymers Based on Pyrrole and 3,4-Ethylenedioxythiophene in BMIM BF4 Using a Microcell Configuration

Astratine

Magner

Cassidy³

et al. 2014

Electrochimica Acta

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Multicolor electrochromism of low‐bandgap copolymers based on pyrrole and 3,4‐ethylenedioxythiophene: Fine‐tuning colors through feed ratio

Zhang

Tao

et al. 2012

J of Applied Polymer Sci

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The copolymerization of pyrrole with 3,4‐ethylenedioxythiophene (EDOT) is successfully achieved in boron trifluoride diethyl etherate via direct anodic oxidation of the monomer mixtures on indium‐tin oxide working electrodes. The resultant copolymers are characterized by electrochemical methods, FT‐IR, XPS, SEM, and spectroelectrochemical analysis. The copolymer films present excellent electrochromic properties especially the multicolor electrochromism which can be tuned through the feed ratio of pyrrole and EDOT. The neutral copolymer films exhibit blue‐shift with the increasing feed ratio of pyrrole and EDOT, and the calculated band gaps of the copolymers are as low as that of PEDOT film. Furthermore, the electrochemical and optical stability has been improved by the incorporation of EDOT units into the polymer chains. The copolymer prepared with the changing feed ratio of pyrrole and EDOT at 1/4 retains 71% of its original electroactivity after 500 cycles and 72% of its optical contrast after 500 steps. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Tricolor electrochromism of PEDOT film electrodeposited in mixed solution of boron trifluoride diethyl etherate and tetrahydrofuran: Hypsochromic effect

Cao¹,

Tao²,

Cheng³

et al. 2013

J of Applied Polymer Sci

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PEDOT [poly (3,] films have been electrochemically prepared in mixed solution of boron trifluoride diethyl etherate and tetrahydrofuran (BFEE-THF). The film shows tricolor electrochromism which is claret red at À0.8 V, light grey at 0.2 V, and sea blue at 1.0 V. The film retains 74% of the original electroactivity and unperturbed electrochromic behaviors after 3000 cycles indicating potential applications on EC devices. Spectroelectrochemistry indicates that the p-p* transition absorption peak (k max ) in the neutral state is located at 512 nm and the calculated energy gap (E g ) is 1.76 eV by the onset wavelength. Compared to the electropolymerization of PEDOT films in conventional solvent, tricolor electrochromism can be ascribed both to the low onset oxidation potential and polymerization rate in BFEE-THF, which may result in a low conjugation length of PEDOT.

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Electrosynthesises and characterizations of copolymers based on pyrrole and 3,4-ethylenedioxythiophene in aqueous micellar solution

Cited by 24 publications

References 28 publications

Electrodeposition and Characterisation of Copolymers Based on Pyrrole and 3,4-Ethylenedioxythiophene in BMIM BF4 Using a Microcell Configuration

Electrodeposition and Characterisation of Copolymers Based on Pyrrole and 3,4-Ethylenedioxythiophene in BMIM BF4 Using a Microcell Configuration

Multicolor electrochromism of low‐bandgap copolymers based on pyrrole and 3,4‐ethylenedioxythiophene: Fine‐tuning colors through feed ratio

Tricolor electrochromism of PEDOT film electrodeposited in mixed solution of boron trifluoride diethyl etherate and tetrahydrofuran: Hypsochromic effect

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