Fabrication of remote controllable devices with multistage responsiveness based on a NIR light-induced shape memory ionomer containing various bridge ions
Fabrication of remote controllable devices with multistage responsiveness based on a NIR light-induced shape memory ionomer containing various bridge ions
复制标题
基于含有各种桥离子的近红外光诱导形状记忆离聚物制造具有多级响应能力的远程可控设备
DOI：
10.1039/c9ta05329h
复制
发表时间：
2019-09-28
影响因子：
11.9
通讯作者：
Chen, Xin
中科院分区：
文献类型：
--
作者：
Bai, Yongkang;Zhang, Jiwen;Chen, Xin
近红外(NIR)光响应器件因其在生物医学设备、软机器人和可穿戴电子设备中的广泛应用而引起了广泛的科学关注。然而，这些器件和相应的形状记忆材料的容易制造仍然是一个挑战。本文以商品化的聚合物为骨架，以各种金属离子为交联结，合成了一系列新型的近红外诱导形状记忆离聚体，其形状恢复率高达93%以上。由于每个离子的特定光热效应，只需调整金属离子的种类和含量，就可以自由地定制离聚体的光致形状记忆性能。此外，动态离子交联相互作用还导致光诱导的可塑性，导致这些离聚体可重复编程为新的永久形状，而不会牺牲它们的形状记忆性能。这些含有不同桥联离子的离聚体的组合能够实现光诱导的多级形状调制，并被进一步用于制造光致动器和开关等器件，展示了它们在各个领域的广泛应用潜力。
Near-infrared (NIR) light responsive devices have attracted extensive scientific attention due to their wide range of applications in biomedical devices, soft robotics and wearable electronics. However, the easy fabrication of these devices and the corresponding shape memory materials is still a challenge. Herein, we synthesized a series of novel NIR-induced shape memory ionomers with multistage responsiveness using commercialized polymers as the framework and various metal ions as cross-linked junctions, which exhibit a high shape recovery ratio of over 93%. The light-induced shape memory properties of the ionomer can be freely tailored by merely adjusting the species and content of metal ions due to the specific photothermal effect of each ion. Moreover, the dynamic ionic cross-linked interaction also causes light-induced plasticity, leading to repeatable programming of these ionomers to new permanent shapes without sacrificing their shape memory properties. The combination of these ionomers containing different bridge ions is able to achieve light-induced multistage shape modulation, which was further used to fabricate several devices, such as light-operated actuators and switches, demonstrating their versatile application potential in various fields.