The simpler, the better. A series of simple, neutral and ultralow‐molecular‐weight (MW: 140–200) hydrazide‐derived supramolecular gelators have been designed and synthesized in two straightforward steps. For non‐conjugated cyclohexane‐derived hydrazides, their monomers can self‐assemble to form gels through intermolecular hydrogen bonds and dipole‐dipole interactions. Significantly, conjugated phthalhydrazide can self‐aggregate into planar and circular trimers through intermolecular hydrogen bonds and then self‐assemble to form gels through intermolecular π–π stacking interactions. It is interesting that these simple gelators exhibit unusual properties, such as self‐healing, multi‐response fluorescence, and visual and selective recognition of chiral (R)/(S)‐1,1′‐binaphthalene‐2,2′‐diamine and S²⁻ through much different times of gel re‐formation and blue‐green color change, respectively. These results underline the importance of supramolecular gels and extend the scope of supramolecular gelators.

中文翻译：

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基于酰肼单体和三聚体的超低分子量刺激响应和多功能超分子凝胶。

越简单越好。设计并合成了一系列简单，中性和超低分子量（MW：140–200）的酰肼类超分子凝胶剂，并通过两个简单的步骤进行了合成。对于非共轭的衍生自环己烷的酰肼，它们的单体可以通过分子间氢键和偶极-偶极相互作用自组装形成凝胶。重要的是，共轭邻苯二甲酰肼可以通过分子间氢键自聚集成平面和圆形三聚体，然后通过分子间π-π堆积相互作用自组装形成凝胶。有趣的是，这些简单的胶凝剂表现出不同寻常的特性，例如自我修复，多响应荧光以及手性（R）/（S）-1,1'-联萘-2,2'-二胺和S ^2−分别通过不同的凝胶重整时间和蓝绿色变色时间。这些结果强调了超分子凝胶的重要性，并扩展了超分子胶凝剂的范围。