Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan.
Department of Chemistry, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
Chem Asian J. 2021 Jul 5;16(13):1750-1755. doi: 10.1002/asia.202100433. Epub 2021 Jun 1.
Urea derivatives that were substituted with a 2-benzylphenyl group and an alkyl group functioned as low molecular weight gelators for various organic solvents and ionic liquids. Urea derivatives with long alkyl chains were effective for the gelation of polar solvents. However, they were not suitable for the gelation of non-polar solvents, whereas urea derivatives with short alkyl chains were effective. Ionic liquids were similar to polar solvents in that urea derivatives with long alkyl chains were the most effective gelators. The physical properties of the formed supramolecular gels were analyzed by dynamic viscoelasticity measurements using a rheometer.
带有 2-苄基苯基和烷基取代基的尿素衍生物可用作各种有机溶剂和离子液体的低分子量凝胶剂。具有长烷基链的尿素衍生物可有效凝胶化极性溶剂。但是，它们不适合凝胶化非极性溶剂，而短烷基链的尿素衍生物则有效。离子液体类似于极性溶剂，长烷基链的尿素衍生物是最有效的凝胶剂。使用流变仪通过动态粘弹性测量分析形成的超分子凝胶的物理性质。
