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Electrically Tunable Hysteretic Photonic Gels for Nonvolatile Display Pixels

Authors

  • Kyosung Hwang,

    1. Department of Chemistry, Research Institute for Natural Sciences, and Institute of Nano Science and Technology, Hanyang University, 17 Haengdang Dong, Seongdong Gu, Seoul, 133-791 (Korea)
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  • Dongwoo Kwak,

    1. Department of Chemistry, Research Institute for Natural Sciences, and Institute of Nano Science and Technology, Hanyang University, 17 Haengdang Dong, Seongdong Gu, Seoul, 133-791 (Korea)
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  • Changjoon Kang,

    1. Department of Chemistry, Research Institute for Natural Sciences, and Institute of Nano Science and Technology, Hanyang University, 17 Haengdang Dong, Seongdong Gu, Seoul, 133-791 (Korea)
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  • Daihyun Kim,

    1. Department of Chemistry, Research Institute for Natural Sciences, and Institute of Nano Science and Technology, Hanyang University, 17 Haengdang Dong, Seongdong Gu, Seoul, 133-791 (Korea)
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  • Youshin Ahn,

    1. Department of Chemistry, Research Institute for Natural Sciences, and Institute of Nano Science and Technology, Hanyang University, 17 Haengdang Dong, Seongdong Gu, Seoul, 133-791 (Korea)
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  • Prof. Youngjong Kang

    Corresponding author
    1. Department of Chemistry, Research Institute for Natural Sciences, and Institute of Nano Science and Technology, Hanyang University, 17 Haengdang Dong, Seongdong Gu, Seoul, 133-791 (Korea)
    • Department of Chemistry, Research Institute for Natural Sciences, and Institute of Nano Science and Technology, Hanyang University, 17 Haengdang Dong, Seongdong Gu, Seoul, 133-791 (Korea)
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  • This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education, Science and Technology (2010-0002358), the International Research & Development Program of the National Research Foundation of Korea (NRF), funded by the Ministry of Education, Science and Technology (MEST) of Korea (Grant number: K2010-00295, FY 2010 and K21002001635-10E0100-06310), and the Seoul R&BD Program (10919).

Abstract

original image

Plastic pixels: Electrically tunable photonic pixels exhibiting nonvolatile photonic colors are demonstrated by coupling the hysteretic optical properties of PS-b-P2VP block copolymer photonic gels with an electrochemically induced pH gradient. The optical volatility of photonic pixels was tuned by controlling the hysteresis strength and the conversion pH value, which were both highly dependent on the species of anions pairing with pyridinium groups.

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