Neutral Black Color Showing Electrochromic Copolymer based on Dithienopyrroles and Benzothiadiazole Derivatives

被引：3
|
作者：
Hu, Bin [1 ,2 ]
机构：
[1] Zhoukou Normal Univ, Henan Key Lab Rare Earth Funct Mat, Zhoukou 466001, Peoples R China
[2] Zhoukou Normal Univ, Key Lab Rare Earth Funct Mat & Applicat, Zhoukou 466001, Peoples R China
来源：
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | 2021年 / 10卷 / 07期
基金：
中国国家自然科学基金;
关键词：
CONJUGATED POLYMER; GREEN; STATE; REALIZATION; CARBAZOLE; UNITS; DTP; RED;
D O I：
10.1149/2162-8777/ac10b9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel monomer of 4-(4H-dithieno[3,2-b:2 ',3 '-d]pyrrol-4-yl)-N,N-dimethylaniline (TPDA) based on pyrrole and thiophene units was designed and synthesized, with the homopolymer and copolymer with 4,7-di(2,3-dihydro-thieno[3,4-b][1,4]dioxin-5-yl)benzo[1,2,5]thiadiazole (BDT) prepared by an electrochemical method. Both polymers exhibited good electrochemical properties. Spectroelectrochemical features were investigated using an electrochemical station and UV-vis spectrophotometer. PTPDA film showed orange color in the neutral state and blue color for the oxidation state while PBDT film exhibits a neutral green color and light blue for the oxidation state. The copolymer film can cover the entire visible region due to its possessing the absorption features of both PTPDA and PBDT films, which exhibits black color in the neutral state (0 V) and blue color in the oxidation state (1.0 V). In addition, both the homopolymer and copolymer exhibit good electrochemical stability and coloration efficiency. These electrochromic properties make them as potential candidates for applications.
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页数：7
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