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Photo-responsive liquid crystalline epoxy networks with exchangeable disulfide bonds

机译:具有可交换二硫键的光敏液晶环氧树脂网络

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The increasing demand for intelligent materials has driven the development of polymers with a variety of functionalities. However, combining multiple functionalities within one polymer is still challenging because of the difficulties encountered in coordinating different functional building blocks during fabrication. In this work, we demonstrate the fabrication of a multifunctional liquid crystalline epoxy network (LCEN) using the combination of thermotropic liquid crystals, photo-responsive azobenzene molecules, and exchangeable disulfide bonds. In addition to shape memory behavior enabled by the reversible liquid crystalline phase transition and photo-induced bending behavior resulting from the photo-responsive azobenzene molecules, the introduction of dynamic disulfide bonds into the LCEN resulted in a structurally dynamic network, allowing the reshaping, repairing, and recycling of the material.
机译:对智能材料的需求不断增长,带动了具有多种功能的聚合物的发展。然而,由于在制造过程中协调不同的功能构件时遇到困难,在一种聚合物中组合多种功能仍然是挑战。在这项工作中,我们演示了使用热致液晶,光敏偶氮苯分子和可交换的二硫键的组合制造多功能液晶环氧网络(LCEN)。除了可逆的液晶相变和由光响应性偶氮苯分子产生的光致弯曲行为带来的形状记忆行为外,将动态二硫键引入LCEN还产生了结构动态网络,从而可以重塑,修复,并回收材料。

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