Citation:
JIANG Qing-Long, FU Xiang-Kai, CHEN Zhu-Jun. Alkene Substituted Viologens and Solid Electrochromic Device[J]. Chinese Journal of Applied Chemistry,
;2007, 24(9): 1032-1035.
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In this paper, two alkene substituted viologen derivatives were synthesized; NMR, IR and UV were used to confirm their structures; the CV showed that the these compounds have 2 reversible redox peaks. With PEO-gel polyelectrolyte as ionic conduction layer, electrochromic devices based on these compounds were assembled. Their thickness was about 2.35 mm. The completely solidification of the devices could improve the properties of colorization-decolonization and the maintenance of colorization after cutting off electricity compared with the liquid electrochromic device. The technics of the solidification device is much easier and has a good potential for large scale production. When charged voltage is in a range of 1.1 V to 3 V, the solidification device shows a color of blue or violet. After optimization, the response time is less than 50 ms, the number of redox circulation is over million times and the color of colorization could be kept for 3 days. The main indexes of this kind of device can meet the requirement of electronic ink.
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Keywords:
- viologen,
- synthesis,
- solid electrochromic device,
- electronic ink
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