合成并表征了一种胆固醇的直链葡萄糖衍生物(1),考察了其在36种常见溶剂中的胶凝行为.结果表明:1可使11种溶剂胶凝;1/氯仿体系可以室温成胶;多个体系的溶胶-凝胶相转变温度(Tgel)可超过相应溶剂的沸点,此外,对干凝胶形貌的显微分析发现,胶凝剂1的聚集方式呈现出糖类胶凝剂所具有的纤维网状结构特征,FTIR和H NMR研究表明,除了胆固醇的范德华堆积之外,氢键作用也是该化合物成胶的重要驱动力。
A new linear-glucose-appended cholesterol derivative (1) has been synthesized and characterized, and its gelation ability was evaluated in 36 solvents. 1 was found to gelate 11 of the solvents tested. More importantly, it gels chloroform at room temperature. Furthermore, for a number of the gel systems, their sol-gel phase-transition temperarares ( Tgel) are higher than the boiling points of their corresponding solvents. SEM observation shows that the representative xerogels are characterized by fibrous network structures. FHR and H NMR measurements reveal that hydrogen-bonding interaction between the gelator molecules is one of the main driving forces for the formation of the gels.