We report herein the use of an aromatic–aromatic interaction to produce small molecule hydrogelators that self-assemble in water and form molecular nanofibers in the resulting hydrogels. Among these hydrogelators, a hydrogelator (6) made from a phenylalanine and a cinnamoyl group represents the lowest molecular weight (MW = 295.33 g/mol) peptide-based hydrogelator prepared to date. The supramolecular hydrogels were characterized by transmission electron micrograph (TEM) and fluorescence spectroscopy, and the results obtained by both techniques correlate well with their rheological properties. Notably, compound 6 can undergo cis/trans-isomerization upon UV irradiation.
我们在此报告使用芳香-芳香相互作用来制备小分子水凝胶剂,这些水凝胶剂在水中自组装并在所得水凝胶中形成分子纳米纤维。在这些水凝胶剂中,由苯丙氨酸和肉桂酰基制成的水凝胶剂(6)代表迄今为止制备的分子量最低(分子量=295.33克/摩尔)的肽基水凝胶剂。这些超分子水凝胶通过透射电子显微镜(TEM)和荧光光谱进行表征,两种技术得到的结果与它们的流变性质良好相关。值得注意的是,化合物6可以在紫外照射下发生顺式/反式异构化。