著者

Masayoshi Higuchi Yukio Fujii Yoji Hisamatsu

出版者

The Institute of Image Information and Television Engineers

雑誌

ITE Transactions on Media Technology and Applications (ISSN:21867364)

巻号頁・発行日

vol.9, no.4, pp.228-233, 2021 (Released:2021-10-01)

参考文献数

21

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Metallo-supramolecular polymers (MSPs) are a novel type of electrochromic (EC) materials. Ru(II)-based MSP (polyRu) composed of Ru(II) and bis(terpyridyl)benzene showed reversible color changes between orange and pale green. The orange color was caused by the metal-to-ligand charge transfer (MLCT) absorption in polyRu and disappeared by the electrochemical oxidation of Ru(II) to Ru(III). The pale green was returned to the original orange by the electrochemical reduction of Ru(III) to Ru(II). EC devices with polyRu were fabricated by the combination of an electrolyte solution, counter material, and two ITO glasses. The character images were displayed on the EC devices using insulating films. The insulating films prevented the electron transfer between the ITO glass and the polyRu layer and made the image stand out in the device. The fabricated EC display devices were presented at a science museum of Japan as experience-based exhibits.