高等学校化学学报2011，Vol.32Issue(7)：1573-1580,8.
含顺反异构双胆固醇型小分子胶凝剂的合成与胶凝行为
Preparation and Gelation Behavior Studies of Two Dimeric Cholesterol Based Low Molecular Mass Gelators Containing Different Stereoisomerisms
摘要
Abstract
Two cholesterol-containing low molecular mass gelators ( LMMGs ) of A ( LS ) 2 type with glycin in the linkers and butene diacid in the A part were prepared. Their gelation abilities were evaluated in 30 commonly used organic solvents. It was found that the change in the stereo-structure of the linker had a dramatic effect upon the gelation behaviors of the gelators. Interestingly, MA-G gelated CC14 spontaneously at room temperature, and the gel as-formed exhibited good thermal stability and thixotropic property as revealed by rheo-- logical studies. More interestingly, MA-C showed phase-selective gelation of CC14 from its mixture with water. SEM observation demonstrated that the morphologies of the aggregates of the gelators in the gels depend, but not only, on the structures of the gelators. The concentrations of the gelators, and even their interactions with the solvents also showed great effect upon the morphologies. Temperature and concentration dependent 1H NMR measurements revealed that inter-molecular hydrogen bonding and π-π stacking among the molecules of the gelators are important driving forces for the formation of the gels. XRD study revealed that MA-C assembled into a layered structure in its CC14 gel.关键词
超分子凝胶/胆固醇/顺丁烯二酸/反丁烯二酸Key words
Supramolecular gel/Cholesterol/Maleic acid/Fumaric acid分类
化学化工引用本文复制引用
张荷兰,晏妮,武思文,蔡秀琴,刘凯强,房喻..含顺反异构双胆固醇型小分子胶凝剂的合成与胶凝行为[J].高等学校化学学报,2011,32(7):1573-1580,8.基金项目
国家自然科学基金(批准号:20902055,91027017)资助. （批准号:20902055,91027017）
