A new family of valine-containing 3,5-diaminobenzoate derivatives 2 with N-alkylurea moieties attached to the valine moieties was prepared. By appending these two new N-alkylurea chains to the molecular structure, their organogelating properties were extended from only aromatic solvents, to a wide range of other types of solvents such as alicyclic hydrocarbons, alcohols and polar solvents such as DMSO and DMF. It was also found that a longer N-alkylurea chain conferred improved gelation power and higher thermal stability as compared to those of the shorter ones.
一种新的含缬氨酸的3,5-二氨基苯甲酸衍生物2,其中缬氨酸基团连接有N-烷基脲基团,已经制备。通过将这两个新的N-烷基脲基链附加到分子结构中,它们的有机凝胶化性质从仅限于芳香溶剂扩展到范围广泛的其他类型的溶剂,如脂环烃、醇类和极性溶剂,如DMSO和DMF。还发现,较长的N-烷基脲基链相比较短链具有更好的凝胶化能力和更高的热稳定性。