Intelligent hydrogels that simultaneously exhibit excellent toughness, self-healing ability and photoelectronic responsiveness are in high demand but are greatly challenging to prepare. Inspired by the hierarchical structure of fluorescent proteins in jellyfish and biomembranes in nature, herein, a facile and universal all-in-one strategy is demonstrated to construct fluorescent, electrically responsive and ultratough self-healing hydrogels via aqueous self-assembly of polyelectrolyte–surfactant micelles with hierarchical structures and functionality. The self-assembled 2-ureido-4-[1H]-pyrimidone (UPy) hydrophobic core containing reversible physical crosslinks embedded in micelles leads to a durable network structure with excellent toughness and self-healing ability. Moreover, dramatically enhanced fluorescence emission is obtained due to the formation of nanoclusters with electron-rich moieties that show restricted intramolecular motion induced by hydrogen bonding networks from UPy dimer aggregation. The micelle-incorporated sulfonic acid groups mimic the function of biological membrane proteins that deftly control the micelle size, leading to electro-responsiveness, enhanced toughness and fluorescence emission.

中文翻译：

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通过仿生多合一分层胶束的荧光、电响应和超强自愈水凝胶

同时表现出优异韧性、自愈能力和光电响应性的智能水凝胶的需求量很大，但制备起来却极具挑战性。受自然界中水母和生物膜中荧光蛋白的层次结构的启发，本文展示了一种简便且通用的一体化策略，通过聚电解质-表面活性剂的水性自组装构建荧光、电响应和超强自愈水凝胶具有分层结构和功能的胶束。自组装 2-ureido-4-[1 H]-嘧啶酮 (UPy) 疏水核包含嵌入胶束中的可逆物理交联，导致具有优异韧性和自愈能力的耐用网络结构。此外，由于形成具有富电子部分的纳米团簇，显示出由 UPy 二聚体聚集的氢键网络引起的分子内运动受限，因此获得了显着增强的荧光发射。掺入胶束的磺酸基团模仿生物膜蛋白的功能，巧妙地控制胶束大小，导致电响应性、增强的韧性和荧光发射。