Self-adaptive photochromism

IF 11.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Advances Pub Date : 2024-11-06 DOI:10.1126/sciadv.ads2217

Fanxi Sun, Ang Gao, Boyun Yan, Jing Zhang, Xiangru Wang, Hanjun Zhang, Dacheng Dai, Yonghao Zheng, Xu Deng, Chen Wei, Dongsheng Wang

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引用次数: 0

Abstract

Organisms with active camouflage ability exhibit changeable appearance with the switching of environments. However, manmade active camouflage systems heavily rely on integrating electronic devices, which encounters problems including a complex structure, poor usability, and high cost . In the current work, we report active camouflage as an intrinsic function of materials by proposing self-adaptive photochromism (SAP). The SAP materials were fabricated using donor-acceptor Stenhouse adducts (DASAs) as the negative photochromic phases and organic dyes as the fixed phases (nonphotochromic). Incident light with a specific wavelength induces linear-to-cyclic isomerization of DASAs, which generates an absorption gap at the wavelength and accordingly switches the color. The SAP materials are in the primary black state under dark and spontaneously switch to another color upon triggering by transmitted and reflected light in the background. SAP films and coatings were fabricated by incorporating polycaprolactone and are applicable to a wide variety of surfaces.

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自适应光致变色

具有主动伪装能力的生物会随着环境的变化而改变外观。然而，人造主动伪装系统在很大程度上依赖于电子器件的集成，这就遇到了结构复杂、实用性差和成本高昂等问题。在目前的工作中，我们提出了自适应光致变色（SAP）技术，将主动伪装作为材料的固有功能。这种 SAP 材料是以施主-受主斯登豪斯加合物（DASAs）为负光致变色相，以有机染料为固定相（非光致变色）制成的。特定波长的入射光会引起 DASAs 的线性-环异构化，从而在该波长处产生吸收间隙，并相应地转换颜色。SAP 材料在黑暗中处于原黑色状态，在背景透射光和反射光的触发下会自发切换到另一种颜色。SAP 薄膜和涂层是通过加入聚己内酯制成的，适用于多种表面。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science Advances 综合性期刊-综合性期刊

CiteScore

21.40

自引率

1.50%

发文量

1937

审稿时长

29 weeks

期刊介绍： Science Advances, an open-access journal by AAAS, publishes impactful research in diverse scientific areas. It aims for fair, fast, and expert peer review, providing freely accessible research to readers. Led by distinguished scientists, the journal supports AAAS's mission by extending Science magazine's capacity to identify and promote significant advances. Evolving digital publishing technologies play a crucial role in advancing AAAS's global mission for science communication and benefitting humankind.