Orthogonal light triggering of dynamic polymer networks toward on-demand shape evolution control

IF 17.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Matter Pub Date : 2025-07-21 DOI:10.1016/j.matt.2025.102292

Chen Yang, Baoyi Wu, Huijie Wang, Qian Zhao, Di Chen

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Abstract

Shape-shifting materials are bases of soft machines to accomplish sophisticated tasks. While significant progress has been made in diversifying shape transformation behaviors, current evolution pathways are determined by pre-programming approaches, limiting real-time adaptability and flexibility during operation. Here, we report a dynamic covalent polymer network swollen with a nonvolatile aliphatic acid mixture, which enables multi-shape memory properties. During shape-shifting, ultraviolet light is employed to spatially lock the geometries through disulfide bond exchange, allowing the on-demand adjustment of shape evolution. Additionally, the introduction of a photothermal azobenzene derivative allows the gel to undergo sequential shape recovery upon near-infrared light irradiation. This design facilitates real-time control of shape evolution through orthogonal light, overcoming the constraints of pre-programming. Building on this, the polymer is employed as a functional switch with an error-correction capability to enhance electrical safety. The versatility and adaptability of our strategy exhibit great potentials to fabricate future shape-shifting devices.

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面向按需形状演化控制的动态聚合物网络正交光触发

可变形材料是完成复杂任务的软机器的基础。虽然在形状变换行为多样化方面取得了重大进展，但目前的进化路径是由预编程方法决定的，限制了操作过程中的实时适应性和灵活性。在这里，我们报告了一个动态共价聚合物网络膨胀与非挥发性脂肪酸混合物，这使多形状记忆特性。在变形过程中，紫外光通过二硫键交换在空间上锁定几何形状，允许按需调整形状演变。此外，光热偶氮苯衍生物的引入允许凝胶在近红外光照射下进行顺序形状恢复。该设计克服了预编程的限制，通过正交光实现了形状演化的实时控制。在此基础上，该聚合物被用作具有纠错能力的功能开关，以提高电气安全性。我们的策略的多功能性和适应性显示出制造未来变形设备的巨大潜力。

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来源期刊

Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

26.30

自引率

2.60%

发文量

367

期刊介绍： Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.