Multicolored, Low‐Voltage‐Driven, Flexible Organic Electrochromic Devices Based on Oligomers. Issue 10 (20th April 2018)

• Record Type: Journal Article
• Authors: Wan, Zhijun; Zeng, Jinming; Li, Hui; Liu, Ping; Deng, Wenji
• Is Part Of: Macromolecular rapid communications. Volume 39:Issue 10(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-04-20
• Subjects: 3, 4‐ethylenedioxythiophene -- electrochemical dedoping -- electrochemical doping -- electrochromism -- flexible electrochromic devices; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201700886
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: 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‐COOCH3 ), 5, 5′‐di(methyl benzoate)‐2, 2′‐bi(3, 4‐ethylenedioxythiophene) (2EDOT‐2B‐COOCH3 ), 5, 5″‐di(methyl benzoate)‐2, 2′:5′, 2″‐ter(3, 4‐ethylenedioxythiophene) (3EDOT‐2B‐COOCH3 ), and 5, 5″′‐di(methyl benzoate)‐2, 2′:5′, 2″: 5″, 2″′‐quater(3, 4‐ethylenedioxythiophene) (4EDOT‐2B‐COOCH3 ). 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‐COOCH3, which is 75.2% at 700 nm. Abstract : A series of organic conjugated oligomers containing 3, 4‐ethylenedioxythiophene are synthesized. Using these oligomers as active materials, flexible organic electrochromic devices are fabricated. These oligomer films exhibit reversible color changes upon electrochemical doping and dedoping.