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Blue-to-transmissive electrochromic poly(2,3-dimethyl-2,3-dihydrothieno[3,4-b][1,4]dioxine) (PEDOT-Me2) with improved optical contrast

Abstract

A novel electrochromic polymer poly(2,3-dimethyl-2,3-dihydrothieno[3,4-b][1,4]dioxine) (PEDOT-Me2) based on 3,4-ethylenedioxythiophene (EDOT) with symmetric dimethyl pendant groups was successfully synthesized through electrochemical polymerization in 0.1 M LiClO4/ACN electrolyte. The polymer film displays reversible electrochromism switching between blue neutral state (− 1.2 V) and transmissive sky blue oxidized state (0.5 V) with an enhanced optical contrast (ΔT = 30%) in comparison with the traditional PEDOT (ΔT = 25%).

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Funding

This work received financial support from Anhui Natural Science Foundation (1808085 MB29); Natural Science Foundation of Anhui Jianzhu University (JZ182011); Anhui Province College Natural Science Foundation (KJ2017A482); The Support Plan Project of Excellent Young Talents in Universities in Anhui Province (gxyq2017023); The Open Foundation of Anhui Province Key Laboratory of Advanced Building Materials of Anhui Jianzhu University (JZCL201602ZZ); College Students Innovation and Entrepreneurship Training Plan Project (201910878000).

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Correspondence to Xiaoming Chen.

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Chen, X., Zhang, J. Blue-to-transmissive electrochromic poly(2,3-dimethyl-2,3-dihydrothieno[3,4-b][1,4]dioxine) (PEDOT-Me2) with improved optical contrast. J Solid State Electrochem 24, 441–445 (2020). https://doi.org/10.1007/s10008-019-04343-0

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Keywords

  • Blue
  • Transmissive
  • Electrochromic polymer