Programmable dual electrochromism in azine linked conjugated polymer
Programmable dual electrochromism in azine linked conjugated polymer
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DOI：
10.1364/ome.7.002117
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发表时间：
2017-06
影响因子：
2.8
通讯作者：
Minsu Han;M. K. Poduval;Haijin Shin;N. Tamaoki;T. Park;Yuna Kim;Eunkyoung Kim
中科院分区：
文献类型：
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作者：
Minsu Han;M. K. Poduval;Haijin Shin;N. Tamaoki;T. Park;Yuna Kim;Eunkyoung Kim
合成了一种由三-EDOT和吖嗪基团组成的共轭聚合物，并探索了用于可编程双电致变色器件的方法。电化学掺杂（氧化）和去掺杂（还原）导致两个不同的氧化还原对，这取决于所施加的电位范围。现场光谱电化学分析表明，两个单元的分步氧化还原过程与双电致变色响应相关：三-EDOT单元的紫色电致变色随后是吖嗪单元的蓝色电致变色。在低于1.0 V的电压下可实现紫色和蓝色的双重电致变色，在± 1 V左右的电压下可引起颜色转变，最大显色效率为393 cm 2/C，响应时间为1 s。
A conjugated polymer consisting of tri-EDOT and azine groups was synthesized and explored for a programmable dual electrochromic device. Electrochemical doping (oxidation) and de-doping (reduction) resulted in the two distinct redox pairs, depending on the applied potential range. In situ spectroelectrochemical analyses revealed that the stepwise redox process of two units was associated with dual electrochromic responses: tri-EDOT unit for purple electrochromism followed by azine unit for blue electrochromism. Dual electrochromism of purple and blue was attainable at below 1.0 V which could induce the color transition upon the potential application of around ± 1 V. Maximum coloration efficiency of 393 cm2/C with a response time of 1 s was obtained.