双子表面活性剂的NMR研究现状与展望

双子表面活性剂是一类新型的表面活性剂, 其分子由化学键通过联接基团将两个单链表面活性剂的离子头联接构成. 由于其结构的特殊性, 使其具有特殊的性质, 如高表面活性, 特殊的聚集形态等. 多年来的研究结果表明, 联接基团的结构和长度对双子表面活性剂的活性影响最大. 与其它研究手段相比, NMR在从分子水平上研究双子表面活性剂溶液中胶束的形成以及自聚集状态, 有着独特的优势.

NMR Studies of Gemini Surfactants: Recent Progresses and Prospect

Gemini surfactant is a new type of surfactant, with molecules made up of two amphiphilic moieties covalently connected at the level of the head group by a spacer. Because of its unique structure, Gemini surfactant often has some special properties, such as high surface activities and special micro-configurations. The results of many previous studies indicate that the length and the structure of the spacer play the most important roles in determining the surface activities of Gemini surfactant. In comparison with other methods, NMR has some unique advantages for studying the micellization and self-aggregation behaviors of Gemini surfactant.