中文摘要：

近年来，依靠单体单元间可逆和高度取向的非共价作用力形成超分子聚合物（supramolecular polymer）得到广泛关注．在溶液中，超分子单体单元之间通过非共价键相互作用，形成三维网络结构并将有机溶剂或水包裹形成超分子凝胶．相对于聚合物凝胶，超分子凝胶具有以下优点．（1）生物相容性好，（2）依靠非共价连接的结构易于生物降解，（3）可将功能分子直接包埋在凝胶中，因此，超分子水凝胶在组织工程、药物输送、响应性材料、催化剂等方面具有独特的优势．要使单体分子间相互聚集成纤维状结构并实现凝胶化，需要很好控制分子溶解和聚集之间的平衡，通常需要在单体分子中同时引入亲水基和疏水基，文献中报道的超分子单体多为具有复杂结构的氨基酸、糖类以及尿素的衍生物等．虽然氢键作用也是分子聚集的一种推动力，但通常认为氢键作用易被水破坏，目前完全依靠氢键作用形成水凝胶的报道还少．

英文摘要：

A kind of supramolecular building unit,2,6-di[ N-（carboxyethyl carbonyl）aminol pyridine （defined as DAP） was synthesized from 2,6-diaminopyridine and succinic anhydride by a simple procedure. The structure of DAP was confirmed by ^1 H-NMR, IR and elemental analysis. Supramolecular hydrogels were formed during the cooling of DAP aqueous solutions at a concentration range of 3 wt% - 10 wt%. As observed by scanning electron microscopy, supramolecular fibers were noticed in the hydrogels and their dimensions can be regulated by the concentration of DAP. At higher concentrations of DAP, larger fibers and lower hydrogel strengths were resulted. Based on the formation of hydrogen bonds of the molecules an assembling process for supramolecular hydrogels was proposed.