Synthesis, characterizations, and electrochromic properties of donor–acceptor type polymers containing 2, 1, 3‐benzothiadiazole and different thiophene donors. Issue 14 (15th March 2016)

• Record Type: Journal Article
• Authors: Yijie, Tao; Kai, Zhang; Zhaoyang, Zhang; Haifeng, Cheng; Chunlin, Jiao; Yulei, Zhao
• Is Part Of: Journal of polymer science. Volume 54:Issue 14(2016)
• Page Start: 2239
• Page End: 2246
• Publication Date: 2016-03-15
• Subjects: conjugated polymers -- electrochromism -- electropolymerization -- synthesis; 547
• DOI: 10.1002/pola.28097
• Languages: English
• ISSNs: 0887-624X

Abstract

ABSTRACT: Three donor–acceptor type π‐conjugated monomers containing 2, 1, 3‐benzothiadiazole (Tz) as the acceptor unit and different thiophene derivatives (thiophene, 3, 4‐ethylenedioxythiophene, and thieno[3, 2‐b]thiophene) as the donor units have been synthesized via Stille coupling reaction. The corresponding polymers are electrochemically deposited onto FTO glass by cyclic voltammetry (CV). The maximum absorption wavelength of the neutral polymers varies with the electron‐rich character of incorporated thiophene moieties, giving rise to tunable colors. In addition, the prepared polymer films demonstrate reasonable transmittance modulation, fast switching rate, high color efficiency and good stability, which meet the requirements of smart windows and electrochromic display applications. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem.2016, 54, 2239–2246 Abstract : Three monomers based on 2, 1, 3‐benzothidiozole as the acceptor and different thiophene unit as the donors have been synthesized via stille coupling. The corresponding polymers are successfully electropolymerized on FTO glass by cyclic voltammetry method. With electron‐rich character of thiophene moieties increasing from thiophene to EDOT and BTh, the redox behaviors and absorption band can be greatly tuned. In addition, the prepared polymers present good electrochromic properties.