Facile Synthesis of Novel Conducting Copolymers Based on N-Furfuryl Pyrrole and 3,4-Ethylenedioxythiophene with Enhanced Optoelectrochemical Performances Towards Electrochromic Application

Facile Synthesis of Novel Conducting Copolymers Based on N-Furfuryl Pyrrole and 3,4-Ethylenedioxythiophene with Enhanced Optoelectrochemical Performances Towards Electrochromic Application

In this article, a series of novel conducting copolymers P(FuPy-<i>co</i>-EDOT) are prepared via cyclic voltammetry electropolymerization method by using N-furfuryl pyrrole (FuPy) and 3,4-ethylenedioxythiophene (EDOT) as comonomers. The molecular structure, surface morphology, electroche...

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Bibliographic Details
Main Authors: Huixian Li, Xiaomeng Sun, Datai Liu, Xinchang Liu, Xianchao Du, Shuai Li, Xiaojing Xing, Xinfeng Cheng, Dongqin Bi, Dongfang Qiu
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Molecules
Subjects:
electrochemical polymerization
polypyrrole
3,4-ethylenedioxythiophene
conducting polymer
electrochromic
Online Access:https://www.mdpi.com/1420-3049/30/1/42
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Summary:In this article, a series of novel conducting copolymers P(FuPy-<i>co</i>-EDOT) are prepared via cyclic voltammetry electropolymerization method by using N-furfuryl pyrrole (FuPy) and 3,4-ethylenedioxythiophene (EDOT) as comonomers. The molecular structure, surface morphology, electrochemical, and optical properties of the resulting copolymers are characterized in detail upon varying the feed ratios of FuPy/EDOT in the range of 1/1 to 1/9. The results demonstrate that the prepared P(FuPy-<i>co</i>-EDOT) copolymers with a higher proportion of EDOT units (FuPy/EDOT: 2/8~1/9) possess good redox activity, tunable optical absorption performances, and low band gaps (1.75~1.86 eV). Spectroelectrochemistry studies indicate that the resulting copolymers with increased EDOT units show strengthened electrochromic characteristics, exhibiting a red-to-green-to-blue multicolor reversible transition, especially for the P(FuPy<sub>1</sub>-<i>co</i>-EDOT<sub>9</sub>) copolymer films. They also show increased optical contrast (9~34%), fast response time (0.8~2.4 s), and good coloring efficiency (110~362 cm<sup>2</sup> C<sup>−1</sup>). Additionally, the complementary bilayer P(FuPy-<i>co</i>-EDOT)/PEDOT electrochromic devices (ECDs) are also assembled and evaluated to hold excellent electrochromic switching performances with relatively high optical contrast (25%), rapid response time (0.9 s), and satisfactory coloring efficiency (416 cm<sup>2</sup> C<sup>−1</sup>). Together with the superior open circuit memory and cycling stability, they can be used as a new type of electrochromic material and have considerable prospects as promising candidates for electrochromic devices.
ISSN:1420-3049

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