Electrochemistry, Electrochromic and Color Memory Properties of Polymer/Copolymer Based on Novel Dithienylpyrrole Structure

Dai, Yuyu; Li, Weijun; Qu, Xingxing; Liu, Jin; Yan, Shuanma; Ouyang, Mi; Lv, Xiaojing; Zhang, Cheng

doi:10.1016/j.electacta.2017.01.156

Cited by 53 publications

(27 citation statements)

References 33 publications

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“…While PBOPEQ‐PEDOT:PSS film could retain its ~90% original optical contrast after 5,000 s, which indicated that polymer film possesses good EC stability between neutral state and oxidation state in Figure a. The memory effect of the polymer film at the oxidation state was tested by exposing them to air at room temperature without applying voltage . When applied, the positive potential of 1.0 V, the PBOPEQ‐PEDOT:PSS film turns into transparent sandy color with a transmittance of 55.9%.…”

Section: Resultsmentioning

confidence: 97%

A new green‐to‐transmissive polymer with electroactive poly(3,4‐ethylene dioxythiophene):poly(styrene sulfonate) as an interface layer for achieving high‐performance electrochromic device

Тамеев

et al. 2020

Journal of Polymer Science

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A new neutral green electrochromic (EC) polymer, namely poly(5,8‐bis(2,3‐dihydro[3,4‐B][1,4]dioxin‐5‐yl)‐2,3‐dual(4‐(hexadecyloxy) phenyl) quinoxaline) (PBOPEQ) was designed and synthesized. PBOPEQ‐poly(3,4‐ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) film was further prepared by electrochemical polymerization on the PEDOT:PSS modified indium tin oxide (ITO) electrode. Scanning electron microscopy images and ultrasonic experiment indicate that PBOPEQ‐PEDOT:PSS film shows better film‐forming ability and stronger interface adhesive with ITO electrode compared to that of PBOPEQ film. It is worth mentioning that PBOPEQ‐PEDOT:PSS film presents more reversible redox characteristic, better optical contrast (~40%) and coloration efficiency (~230 cm2 C−1) at 678 nm, excellent EC stability and memory property (36 hr), which should be ascribed to that the electroactive PEDOT:PSS layer facilitates the charge transfer process and enhances the ion doping/dedoping properties. EC device based on PBOPEQ‐PEDOT:PSS film exhibits superior integrated performance such as reversible color change from green to transmissive, optical contrast of 41.0% and switching time less than 1 s. Accordingly, PBOPEQ‐PEDOT:PSS is an excellent EC material when combined with electroactive PEDOT:PSS interface layer for achieving high performance device, which shows potential applications in displays, electronic papers, and tags.

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Section: Resultsmentioning

confidence: 97%

A new green‐to‐transmissive polymer with electroactive poly(3,4‐ethylene dioxythiophene):poly(styrene sulfonate) as an interface layer for achieving high‐performance electrochromic device

Тамеев

et al. 2020

Journal of Polymer Science

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“…Polyselenophene that was electropolymerized from triselenophene exhibited the lowest optical band gap (1.72 eV), highest redox stability, as well as the best electrochromic nature of optical contrast up to 75%, coloration efficiency up to 450 cm 2 C −1 , and switching time (0.7 and 0.4 s for oxidation and reduction, respectively) compared to polyselenophene prepared from mono- and biselenophene (Lu et al, 2020 ). Zhang et al, prepared a cross-linked copolymer (pTPhSNS-EDOT) via electrochemical polymerization that exhibited a fast coloring time of 0.58 s and discoloring time of 0.38 s, high optical contrast of 40%, excellent color stability, and improved color memory behavior compared to the pTPhSNS homopolymer (Dai et al, 2017 ). Therefore, extension of the main chain conjugation length is beneficial for obtaining excellent electrochemical and electrochromic properties.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis and Electro-Optical Properties of Dibenzothiophene/Thiophene Conjugated Polymers With Stepwise Enhanced Conjugation Lengths

Lin

Wang

et al. 2020

Front. Chem.

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A total of six conjugated polymers, namely PDBT-Th, PDBT-Th:Th, PDBT-2Th, PDBT-Th:2Th, PDBT-2Th:Th, and PDBT-2Th:2Th, consisting of dibenzothiophene, thiophene, and bithiophene were electrochemically synthesized. Their electrochemical and electrochromic properties were investigated in relation to the conjugation chain lengths of the thiophene units in the conjugated backbones. Density functional theory (DFT) calculations showed that longer conjugation lengths resulted in decreased HOMO-LUMO gaps in the polymers. The optical band gaps ( E g,opt ) and electrochemical band gaps ( E g,cv ) were decreased from PDBT-Th to PDBT-Th:Th, however, PDBT-Th:2Th, PDBT-2Th, PDBT-2Th:Th and PDBT-2Th:2Th displayed the similar band gaps. The conjugation length increments significantly improved the electrochemical stability of the conjugated polymers and exhibited reversible color changes due to the formation of polarons and bipolarons. The results suggest that the conjugated polymers prepared herein are promising candidates for fabricating flexible organic electrochromic devices.

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“…25 Recently, Zhang and co-workers have reported a cross-linked copolymer by electrochemical polymerization of dithienyl pyrrole derivative with EDOT moiety. 28…”

Section: Introductionmentioning

confidence: 99%

“…However, it is surprising that practically nothing is known about the copolymer of EDOT with the DAD monomer unit. 28,29 Although, the DAD polymer has interesting optoelectronic properties for different possible applications. 8,30 According to the recent investigation, regio-irregular polymer synthesized from the unsymmetrical monomer unit enhances the charge-transport properties.…”

Section: Introductionmentioning

confidence: 99%

Donor–Acceptor–Donor Copolymers with 3,4-Ethylenedioxythiophene Moiety: Electropolymerization and Effect on Optoelectronic and Electrochromic Properties

et al. 2019

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Three random copolymers PE- co -M1 , PE- co -M2 , and PE- co -M3 were obtained by electrochemical polymerization of donor–acceptor–donor monomers M1 , M2 , and M3 with 3,4-ethylenedioxythiophene moiety, respectively, using a 1:1 molar ratio of the corresponding monomers, to find new properties and a more effective way to control the optoelectronic properties in conjugated system. For comparison purpose, polymers P1 , P2 , and P3 were prepared from the corresponding monomer units M1 – M3 , respectively, by electrochemical polymerization. We also present efficient synthesis, characterization, and comparative density functional theory (DFT) calculations of the monomers M1 – M3 and polymers P1 – P3 . Cyclic voltammetry, spectroelectrochemistry, and electrochromic properties of all of the polymers P1 – P3 and copolymers PE- co -M1 , PE- co -M2 , and PE- co -M3 were carried out and a throughout comparison was made. We have shown that electrochemical copolymerization is a powerful strategy to tune the highest occupied molecular orbital energy level, band gap, and color of the copolymer. Thus, this finding clearly indicates that the copolymers show significantly different optoelectronic properties compared to their constituent polymers.

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Electrochemistry, Electrochromic and Color Memory Properties of Polymer/Copolymer Based on Novel Dithienylpyrrole Structure

Cited by 53 publications

References 33 publications

A new green‐to‐transmissive polymer with electroactive poly(3,4‐ethylene dioxythiophene):poly(styrene sulfonate) as an interface layer for achieving high‐performance electrochromic device

A new green‐to‐transmissive polymer with electroactive poly(3,4‐ethylene dioxythiophene):poly(styrene sulfonate) as an interface layer for achieving high‐performance electrochromic device

Electrochemical Synthesis and Electro-Optical Properties of Dibenzothiophene/Thiophene Conjugated Polymers With Stepwise Enhanced Conjugation Lengths

Donor–Acceptor–Donor Copolymers with 3,4-Ethylenedioxythiophene Moiety: Electropolymerization and Effect on Optoelectronic and Electrochromic Properties

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