Transmissive-to-Black Electrochromic Switching of Pendant Polyviologen with Liquid Crystalline Side Chains 


Vol. 27,  No. 3, pp. 1109-1118, Mar.  2026
10.1007/s12221-025-01296-2


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  Abstract

We present the synthesis and characterization of a pendant polyviologen copolymer with liquid crystalline side chains, poly(APPV-RM105), exhibiting transmissive-to-black electrochromic switching. This copolymer integrates an asymmetric viologen derivative tailored for robust black electrochromic switching. Though the role of liquid crystalline side chains on electrochromic properties has not been explicitly evidenced, the electrochromic devices (ECDs) incorporating poly(APPV-RM105) reveal excellent performances, including fast switching (< 10 s), high ionic conductivity (5.82 mS/cm), outstanding optical contrast (91% change in transmittance), and extended cycling stability for more than 300 cycles. In addition, the black ECDs exhibit strong photothermal conversion and heat-shielding capabilities. The current polymer-based single-component device structure simplifies fabrication, underscoring the considerable potential for practical applications, such as smart windows, adaptive displays, and thermal management systems.

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  Cite this article

[IEEE Style]

D. Y. Kim, W. Zhang, S. Y. Eom, J. S. Park, "Transmissive-to-Black Electrochromic Switching of Pendant Polyviologen with Liquid Crystalline Side Chains," Fibers and Polymers, vol. 27, no. 3, pp. 1109-1118, 2026. DOI: 10.1007/s12221-025-01296-2.

[ACM Style]

Do Yeon Kim, Wei Zhang, Soo Yeon Eom, and Jong S. Park. 2026. Transmissive-to-Black Electrochromic Switching of Pendant Polyviologen with Liquid Crystalline Side Chains. Fibers and Polymers, 27, 3, (2026), 1109-1118. DOI: 10.1007/s12221-025-01296-2.

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