Waste-Free Fully Electrically Fueled Dissipative Self-Assembly System
Waste-Free Fully Electrically Fueled Dissipative Self-Assembly System
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DOI：
10.1021/jacs.2c13140
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发表时间：
2023-02-15
影响因子：
15
通讯作者：
Guan, Zhibin
中科院分区：
文献类型：
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作者：
Barpuzary, Dipankar;Hurst, Paul J.;Guan, Zhibin
能量燃料活性材料在生命系统中的重要性和普遍性激发了使用各种燃料的合成活性材料的设计。然而，目前设计的几个主要局限性仍有待解决，如在此过程中化学废物的积累，不可持续的活动行为，以及缺乏精确的时空控制。在这里，我们展示了一种完全电燃料（电子燃料）的活性自组装材料，可以克服上述限制。使用具有双电催化剂的电化学装置，一种电催化剂（亚铁氰化物，[Fe（CN）6]4-）的阳极氧化产生正燃料以激活自组装，而同时，另一种电催化剂（甲基紫精，[MV]2+）的阴极还原产生负燃料触发纤维分解。由于反应网络的完全催化性质，这种完全电子燃料的活性材料系统不会产生任何化学废物，当维持电势时可以在延长的时间段内维持活性行为，并提供时空控制。
The importance and prevalence of energy-fueled active materials in living systems have inspired the design of synthetic active materials using various fuels. However, several major limitations of current designs remain to be addressed, such as the accumulation of chemical wastes during the process, unsustainable active behavior, and the lack of precise spatiotem-poral control. Here, we demonstrate a fully electrically fueled (e-fueled) active self-assembly material that can overcome the aforementioned limitations. Using an electrochemical setup with dual electrocatalysts, the anodic oxidation of one electrocatalyst (ferrocyanide, [Fe(CN)6]4-) creates a positive fuel to activate the self-assembly, while simultaneously, the cathodic reduction of the other electrocatalyst (methyl viologen, [MV]2+) generates a negative fuel triggering fiber disassembly. Due to the fully catalytic nature for the reaction networks, this fully e-fueled active material system does not generate any chemical waste, can sustain active behavior for an extended period when the electrical potential is maintained, and provides spatiotemporal control.