A new type of tricolor electrochromic system based on the dynamic redox properties of hexaarylethane derivatives

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Takanori Suzuki, Jun-ichi Nishida and Takashi Tsuji


Abstract

Electrochemical interconversion between 9,9,10,10-tetraaryldihydrophenanthrene 1 and 2,2′-bis(triarylmethylium) 22+ has been proven to proceed via open form cation radical 2 as a stable intermediate; using these three species, a novel tricolor electrochromic system that exhibits hysteretic color change (color 1 → color 2 → color 3 → color 1) is formed.


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