Improving the Electrochemical and Electrochromic Properties of Copolymerized 3,4-Ethylenedioxythiophene with Pyrene

被引：1

作者：

Wang, Xiang ^{[1
]}

Jiang, Haiyun ^{[1
,2
]}

Gan, Muling ^{[1
]}

Zhang, Jun ^{[1
]}

Wu, Ruomei ^{[1
]}

Zhang, Weili ^{[1
]}

Wang, Ziyi ^{[1
]}

Guo, Minxi ^{[1
]}

Mu, Yangfan ^{[1
]}

机构：

[1] Hunan Univ Technol, Sch Packaging & Mat Engn, Zhuzhou 412007, Peoples R China

[2] Natl & Local Joint Engn Res Ctr Adv Packaging Mat, Zhuzhou 412007, Peoples R China

来源：

POLYMERS | 2025年 / 17卷 / 01期

关键词：

electrochemical copolymerization; copolymers; electrochromic property; redox stability; PYRROLE; ELECTROSYNTHESES; POLYMER;

D O I：

10.3390/polym17010069

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Pyrene (Pr) was used to improve the electrochemical and electrochromic properties of polythiophene copolymerized with 3,4-ethylenedioxythiophene (EDOT). The corresponding product, poly(3,4-ethylenedioxythiophene-co-Pyrene) (P(EDOT-co-Pr)), was successfully synthesized by electrochemical polymerization with different monomer concentrations in propylene carbonate solution containing 0.1 M lithium perchlorate (LiClO4/PC (0.1 M)). The homopolymer and copolymer films were analyzed by Fourier transform infrared spectroscopy (FT-IR), color-coordinate and colorimetric methods, cyclic voltammetry (CV), spectroelectrochemistry (SEC), and UV-visible spectroscopy (UV-Vis). Homopolymer poly(3,4-ethylenedioxythiophene) (PEDOT) and the P(EDOT-co-Pr) copolymer were investigated, which included examining their colorimetric, electrochemical, and electrochromic characteristics. The color shifts resulting from redox reactions of the polymers were also observed. The copolymers with different monomer concentrations achieved multicolor shifts, such as light purple, dark blue, dark red, green, and earthy yellow. Moreover, P(EDOT-co-Pr) had a small optical bandgap (1.74-1.83 eV), excellent optical contrast (31.68-45.96%), and high coloring efficiency (350-507 cm2 C-1). In particular, P(EDOT1-co-Pr3) exhibited outstanding cycling stability, retaining 91% of its initial optical contrast after cycling for 10,000 s, and it is expected to be a promising candidate copolymer for electrochromic applications.

引用

页数：16

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