Solution-Processable Copolymers Based on Triphenylamine and 3,4-Ethylenedioxythiophene: Facile Synthesis and Multielectrochromism.

Autor: Neo WT; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A:STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore., Ye Q; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A:STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore., Chua MH; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A:STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore., Zhu Q; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A:STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore., Xu J; Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A:STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore.; Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
Jazyk: angličtina
Zdroj: Macromolecular rapid communications [Macromol Rapid Commun] 2020 Nov; Vol. 41 (21), pp. e2000156. Date of Electronic Publication: 2020 Jun 24.
DOI: 10.1002/marc.202000156
Abstrakt: In comparison with traditional inorganic electrochromic materials, organic polymers offer advantages such as fast switching speed, flexibility, lightweightness, low cost and nontoxicity, solution-processability, and color tunability. Herein, a series of hyper-branched copolymers are synthesized from triphenylamine and 3,4-ethylenedioxythiophene with different feed ratios via iron(III) chloride (FeCl 3 )-mediated oxidative polymerization. The resultant organic-soluble polymers are easily processable and their corresponding electrochromic devices are found to be stable with limited degradation upon 2500 cycles. In addition to their facile synthesis to achieve solution-processable polymers, studies also show that the polymers exhibit multielectrochromic properties and give rise to five colored states upon oxidative-doping by applying an external voltage between 0 and 2.0 V, providing an interesting example of polymers with unique electrochromic switching among up to five colors, from yellow at the neutral state, to pale green, pale purple, orange, and finally gray.
(© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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