Bistable electrochromic materials have been explored as a viable alternative to reduce energy consumption in display applications. However, the development of ideal bistable electrochromic displays (especially multicolour displays) remains challenging due to the intrinsic limitations associated with existing electrochromic processes. Here, a bistable electrochromic device with good overall performance—including bistability (>52 h), reversibility (>12,000 cycles), colouration efficiency (≥1,240 cm2 C−1) and transmittance change (70%) with fast switching (≤1.5 s)—was designed and developed based on concerted intramolecular proton-coupled electron transfer. This approach was used to develop black, magenta, yellow and blue displays as well as a multicolour bistable electrochromic shelf label. The design principles derived from this unconventional exploration of concerted intramolecular proton-coupled electron transfer may also be useful in different optoelectronic applications.
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The data supporting the findings of this study are available within the article and the Supplementary Information and from the corresponding authors on reasonable request.
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This study was supported by the National Science Foundation of China (grant nos. 21602075, 21875087) and the programme for JLU Science and Technology Innovative Research Team and Young Elite Scientist Sponsorship Program by Jilin Province of China (181903).
The authors declare no competing interests.
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Supplementary Figs. 1–49, Tables 1–6, Notes 1 and 2, Methods 1–6, Schemes 1–7, Video Legends 1 and 2 and refs. 1–30.
Bistable electronic shelf label display.
Multicolour bistable electronic shelf label display.
Crystallographic information for M1, M2 and M3.
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Wang, Y., Wang, S., Wang, X. et al. A multicolour bistable electronic shelf label based on intramolecular proton-coupled electron transfer. Nat. Mater. 18, 1335–1342 (2019). https://doi.org/10.1038/s41563-019-0471-8
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