To date, most of the low-molecular-weight gels are found serendipitously, and modification on known gelator structures via organic synthesis is an efficient methodology to prepare gel series. However, a simple, direct, and rational modification method for a known gelator is still a challenge. Herein, we employ Glaser coupling reaction to synthesize a novel dendrimer gelator BisDEC with the (ALS₂)₂ structure, starting from terminal alkyne-based gelator DEC with the ALS₂ structure. This structural change results in gels with distinct gelation solvents, mechanical properties, and stimuli-responsive abilities. The gelation abilities of DEC and BisDEC in nonpolar and polar solvents, respectively, have been examined and discussed by several experiments and Hansen constants. It is also shown that the BisDEC gel system shows intriguing self-healing, self-supporting, and grinding chromism properties.

中文翻译：

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在基于萘二甲酰亚胺的树枝状胶凝剂上的结构可调性，通过量身定制的胶凝溶剂极性和刺激响应特性的Glaser偶联相互作用进行。

迄今为止，大多数低分子量凝胶都是偶然发现的，通过有机合成对已知胶凝剂结构进行修饰是制备凝胶系列的有效方法。但是，对于已知的胶凝剂而言，简单，直接，合理的修饰方法仍然是一个挑战。本文中，我们采用Glaser偶联反应从具有ALS _2的基于末端炔烃的胶凝剂DEC开始合成具有（ALS ₂）₂结构的新型树枝状聚合物胶凝剂BisDEC。结构体。这种结构变化导致凝胶具有独特的胶凝溶剂，机械性能和刺激响应能力。DEC和BisDEC在非极性和极性溶剂中的凝胶化能力已分别通过一些实验和Hansen常数进行了检查和讨论。还显示了BisDEC凝胶系统显示出令人着迷的自修复，自支撑和研磨色差特性。