Transmissive-to-Black Electrochromic Switching of Pendant Viologen Polymer with Superior Long-Term Operation Stability 


Vol. 25,  No. 11, pp. 4115-4123, Nov.  2024
10.1007/s12221-024-00723-0


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  Abstract

Electrochromic devices (ECDs) have evolved significantly with advancements in electrochromic materials. Viologen-based ECDs, known for their tunable electrochromic properties, face challenges such as low cyclic lifetime and electrolyte leakage. This study introduces poly-APPV, a pendant viologen polymer exhibiting transmissive-to-black electrochromic switching. The polymer offers enhanced long-term stability and rapid switching times, effectively addressing these challenges. The synthesis of allyl viologen, [APPV][PF6]2, and poly-APPV is successfully characterized using 1H-NMR, FT-IR, and GPC analyses. Cyclic voltammetry reveals diffusion-controlled redox reactions, while electrochemical impedance spectroscopy shows acceptable ionic conductivity of poly-APPV. Spectroelectrochemical studies indicate significant transmittance changes, with poly-APPV exhibiting a lower operating voltage and superior transmittance difference. Long-term stability tests confirm superior optical density and high coloration efficiency of poly-APPV. Overall, the pendant viologen polymer’s enhanced properties make it a promising material for electrochromic applications. These findings prove the benefits of polymerized viologens in enhancing electrochromic performances, offering valuable insights for developing next-generation electrochromic systems.

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  Cite this article

[IEEE Style]

J. Park, D. Y. Kim, S. Y. Eom, J. S. Park, "Transmissive-to-Black Electrochromic Switching of Pendant Viologen Polymer with Superior Long-Term Operation Stability," Fibers and Polymers, vol. 25, no. 11, pp. 4115-4123, 2024. DOI: 10.1007/s12221-024-00723-0.

[ACM Style]

Jong Park, Do Yeon Kim, Soo Yeon Eom, and Jong S. Park. 2024. Transmissive-to-Black Electrochromic Switching of Pendant Viologen Polymer with Superior Long-Term Operation Stability. Fibers and Polymers, 25, 11, (2024), 4115-4123. DOI: 10.1007/s12221-024-00723-0.