Synthesis and characterization of a novel multicolored electrochromic polymer based on a vinylene-linked EDOT-carbazole monomer
Synthesis and characterization of a novel multicolored electrochromic polymer based on a vinylene-linked EDOT-carbazole monomer
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基于亚乙烯基连接的 EDOT-咔唑单体的新型彩色电致变色聚合物的合成和表征
DOI：
10.1016/j.electacta.2014.02.153
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发表时间：
2014-06
影响因子：
6.6
通讯作者：
Shi, Ying
中科院分区：
文献类型：
--
作者：
Zhang, Tuan;Hu, Yonghong;Yang, Wenge;Shi, Ying
以3，4-乙二氧基噻吩环(EDOT)为端基，3，6-乙基咔唑(NEtCz)为内环单元，以乙撑(V)为间隔，设计合成了一种新型杂环基单体(BedoV-NEtCz)。单体BeDot-V-NEtCz可以在极低的起始电位下进行电化学氧化，其起始电位为0.41×10-6×10-6×10-6×10-6。采用循环伏安法(CV)电化学合成了电活性聚合物(PBEDOT-V-NEtCz)，并对其电致变色性能进行了研究。用循环伏安、扫描电子显微镜和差示扫描量热仪对PBEDOT-V-NEtCz薄膜进行了表征。光谱电化学分析表明，PBEDOT-V-NEtCz薄膜表现出多色电致变色：还原状态为砖红色，氧化状态为天蓝色，以及三种中间色(0.2V为棕色，0.4V为橄榄绿，0.6V为蓝绿色)。颜色变化伴随着良好的光学对比度，在759 nm处分别为50%，在470 nm处为27%。动力学研究表明，漂白过程的开关时间分别为1.2s(759 Nm)和1.9s(470 Nm)，着色过程的开关时间分别为1.4s(759 Nm)和1.8s(470 Nm)(占全ΔT%的95%)。所得聚合物可用作电致变色器件的有源层。
A novel heterocycle-based monomer (BEDOT-V-NEtCz) is designed and synthesized using 3,4-ethylenedioxythiophene (EDOT) as the end units and 3,6-linked N-ethyl-carbazole (NEtCz) as the inner unit spaced by vinylene (V). The monomer BEDOT-V-NEtCz can be electrochemically oxidized at a very low onset potential of 0.41 V vs SCE. The resulting electroactive polymer (PBEDOT-V-NEtCz) is electrochemically synthesized by cyclic voltammetry (CV) method and its electrochromic properties are reported. Characterizations of PBEDOT-V-NEtCz film are performed by CV, scanning electron microscopy (SEM) and differential scanning calorimeter (DSC). Spectroelectrochemical analysis reveals that PBEDOT-V-NEtCz film shows multicolored electrochromism: brick-red in the reduced state, sky-blue in the oxidized state and three intermediate colors (brown at 0.2 V, olive green at 0.4 V and blue-green at 0.6 V vs SCE). The color changes are accompanied by good optical contrasts of 50% at 759 nm and 27% at 470 nm, respectively. Kinetic studies reveal that the switching time of PBEDOT-V-NEtCz film are 1.2s (759 nm) and 1.9s (470 nm) for the bleaching process and 1.4s (759 nm) and 1.8s (470 nm) for the coloration process (95% of the full ΔT%), respectively. The resultant polymer could be useful as the active layers in electrochromic devices.
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影响因子：
6
作者：
Ying Lin;Yu Chen;Zhi-Kuan Chen;D. Ma;Bin Zhang;Tengling Ye;Yanfeng Dai
通讯作者：
Ying Lin;Yu Chen;Zhi-Kuan Chen;D. Ma;Bin Zhang;Tengling Ye;Yanfeng Dai
影响因子：
2.9
作者：
Arzola, S;Palomar-Pardavé, ME;Genesca, J
通讯作者：
Genesca, J
影响因子：
8.6
作者：
Berlin, A;Zotti, G;Zanelli, A
通讯作者：
Zanelli, A
影响因子：
8.6
作者：
B. Thompson;P. Schottland;K. Zong;J. Reynolds
通讯作者：
B. Thompson;P. Schottland;K. Zong;J. Reynolds
影响因子：
2.1
作者：
A. Mohanakrishnan;A. Hucke;Michael A. Lyon;M. Lakshmikantham;M. Cava
通讯作者：
A. Mohanakrishnan;A. Hucke;Michael A. Lyon;M. Lakshmikantham;M. Cava