State Key Laboratory of Luminescent Materials and Devices, Research Institute of Materials Science, South China University of Technology, Guangzhou, 510640, China.
Department of Applied Physics, South China University of Technology, Guangzhou, 510640, China.
Macromol Rapid Commun. 2018 May;39(10):e1700886. doi: 10.1002/marc.201700886. Epub 2018 Apr 20.
In this study, a series of organic conjugated oligomers containing 3,4-ethylenedioxythiophene (EDOT) and aromatic groups are synthesized, which are as follows: 2,5-di(methyl benzoate)-3,4-ethylenedioxy-thiophene (1EDOT-2B-COOCH ), 5,5'-di(methyl benzoate)-2,2'-bi(3,4-ethylenedioxythiophene) (2EDOT-2B-COOCH ), 5,5″-di(methyl benzoate)-2,2':5',2″-ter(3,4-ethylenedioxythiophene) (3EDOT-2B-COOCH ), and 5,5″'-di(methyl benzoate)-2,2':5',2″: 5″,2″'-quater(3,4-ethylenedioxythiophene) (4EDOT-2B-COOCH ). Using these oligomers as active materials, flexible organic electrochromic devices are fabricated. The device structure is indium tin oxide-PET plastic slide (ITO-PET)/active layer/conducting gel/ITO-PET, and the electrochromic properties of oligomers are investigated. These oligomers exhibit reversible color changes upon electrochemical doping and dedoping. The highest optical contrast is exhibited by 4EDOT-2B-COOCH , which is 75.2% at 700 nm.
在这项研究中，合成了一系列含有 3,4-亚乙基二氧噻吩（EDOT）和芳基的有机共轭低聚物，如下所示：2,5-二（甲酯基）-3,4-亚乙基二氧噻吩（1EDOT-2B-COOCH3）、5,5'-二（甲酯基）-2,2'-双（3,4-亚乙基二氧噻吩）（2EDOT-2B-COOCH3）、5,5″-二（甲酯基）-2,2':5',2″-三（3,4-亚乙基二氧噻吩）（3EDOT-2B-COOCH3）和 5,5″'-二（甲酯基）-2,2':5',2″:5″,2″'-四（3,4-亚乙基二氧噻吩）（4EDOT-2B-COOCH3）。使用这些低聚物作为活性材料，制备了柔性有机电致变色器件。器件结构为氧化铟锡-聚对苯二甲酸乙二醇酯塑料滑动片（ITO-PET）/活性层/导电凝胶/ITO-PET，并研究了低聚物的电致变色性能。这些低聚物在电化学掺杂和去掺杂时表现出可逆的颜色变化。4EDOT-2B-COOCH3 的光学对比度最高，在 700nm 处达到 75.2%。
