Inkjet Printing Bio‐Inspired Electrochromic Pixels
Inkjet Printing Bio‐Inspired Electrochromic Pixels
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DOI：
10.1002/admi.202202463
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发表时间：
2023-03
影响因子：
5.4
通讯作者：
Patrick A. Sullivan;Daniel J. Wilson;Matthew K. Vallon;Duncan Q. Bower;L. Deravi
中科院分区：
文献类型：
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作者：
Patrick A. Sullivan;Daniel J. Wilson;Matthew K. Vallon;Duncan Q. Bower;L. Deravi
在本报告中，描述了将生物色素、黄瘤素 (Xa) 作为可编程显示单元的喷墨印刷电致变色像素 (ECP) 的设计、制造和测试。作为氧化还原敏感的发色团，Xa 作为生理指示剂存在于某些物种中，具有与不同行为或发育阶段相关的红色（还原）或黄色（氧化）颜色。这些功能最近已在一些材料应用中得到利用，展示了变色传感器和显示器的仿生设计解决方案。本文描述了这些应用的扩展，用于打印可单独寻址的 ECP，这些 ECP 可以在温和退火步骤中进行处理，以在最初不导电的基材上引入局部导电性。当与聚（3,4-乙撑二氧噻吩）聚苯乙烯磺酸盐（PEDOT:PSS）载体油墨一起配制时，添加 0.19 wt% Xa 足以生成动态 ECP，该动态 ECP 可以作为横向电极批量印刷在任何基材上，充当跨越电隔离边界的导体和显示单元。应用低电势会触发跨越红/黄色彩空间的可逆颜色变化，并且可以循环数天。这些结果代表了向采用 Xa 等替代活性材料来制造和规模化低功耗、变色像素和图案迈出的重要一步。
In this report the design, fabrication, and testing of inkjet‐printed electrochromic pixels (ECPs) incorporating the biochrome, xanthommatin (Xa) as programmable display units is described. As a redox sensitive chromophore, Xa is present in some species as a physiological indicator with red (reduced) or yellow (oxidized) colors associated with different behavioral or developmental stages. These features have been recently leveraged in some materials applications, illustrating a bio‐inspired design solution to color‐changing sensors and displays. This paper describes an extension of these applications to print individually addressable ECPs that can be processed in a mild annealing step to introduce localized conductivity on initially nonconductive substrates. When formulated together with a poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) carrier ink, an addition of 0.19 wt% Xa is enough to generate dynamic ECPs which can be batch printed as lateral electrodes on any substrate to serve as both conductors and display units across electrically isolated boundaries. Application of low potentials triggers reversible color changes that span the red/yellow color space and can cycle for days. These results represent an important step towards the incorporation of alternative active materials like Xa to manufacture and scale low‐power, color‐changing pixels and patterns.