한국섬유공학회지 (Textile Science and Engineering)

  • 제61권3호
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  • Pages.144-149
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  • 2024
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
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비올로겐을 포함하는 신축성 고분자 합성과 유연한 전기변색소자 제조 연구

Synthesis of Viologen-Incorporated Stretchable Polymer for Flexible Electrochromic Devices

  • 최재원 (부산대학교 응용화학공학부) ;
  • 엄수연 (부산대학교 응용화학공학부) ;
  • 박종승 (부산대학교 응용화학공학부)
  • Jae Won Choi (School of Chemical Engineering, Pusan National University) ;
  • Soo Yeon Eom (School of Chemical Engineering, Pusan National University) ;
  • Jong S. Park (School of Chemical Engineering, Pusan National University)
  • 투고 : 2024.06.03
  • 심사 : 2024.06.24
  • 발행 : 2024.06.30
⟨ 이전 논문 다음 논문 ⟩

초록

Electrochromism is a phenomenon in which materials change color reversibly through electrochemical oxidation and reduction reactions when an external voltage is applied. Viologens are commonly used as organic electrochromic materials in all-in-one ion gel compositions due to their electron-accepting ability and versatile synthesis routes. However, their integration into polymers for ion gel preparation is not well-reported. With growing interest in wearable devices, significant efforts have been made to develop advanced electrochromic materials for flexible electrochromic devices (ECDs). In this study, we synthesized a viologen-incorporated stretchable polymer and applied it to ECD fabrication on an ITO-PET substrate. The prepared flexible ECDs operated at a voltage of -2.5 V, exhibiting a high optical contrast of 83.9% at 600 nm, a coloration efficiency of 82.8 cm2/C, long-term switching stability up to 9000 s, and switching times under 20 s. Additionally, these viologen-incorporated polymer ECDs demonstrate durability when bent, proving their suitability for upcoming technologies like smart displays and wearable gadgets.

키워드

과제정보

이 논문은 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음.

참고문헌

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  3. J. W. Kim and J. M. Myoung, "Flexible and Transparent Electrochromic Displays with Simultaneously Implementable Subpixelated Ion Gel-based Viologens by Multiple Patterning", Adv. Funct. Mater., 2019, 29, 1808911. 
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  5. G. K. Pande, F. Sun, R. Pal, and J. S. Park, "Photocurable allyl viologens exhibiting RGB-to-black electrochromic switching for versatile heat-shielding capability", Sol. Energy Mater Sol. Cells, 2023, 263, 112579. 
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