基于谷氨酸衍生物和脂肪酸双元有机凝胶的有序纳米结构和组装模式研究  

Investigation of Orderly Nanostructuresand Assembly Modes of Binary Organogels Via Glutamic Acid Amino Derivativeand Different Fatty Acids

作　　者：焦体峰[1,2] 邢蕊蕊[1] 沈喜海[1,3] 张庆瑞[1] 周靖欣[1] 高发明[1] 

机构地区：[1]燕山大学环境与化学工程学院河北省应用化学重点实验室,河北秦皇岛066004 [2]兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000 [3]河北科技师范学院理化学院,河北秦皇岛066004

出　　处：《纳米科技》2014年第2期68-76,共9页

摘　　要：设计研究了具有不同烷基链长度的脂肪酸与谷氨酸衍生物在多种有机溶剂中的双元凝胶行为，在20种溶剂中的凝胶性能测试结果表明是新型双元有机胶凝剂，实验结果表明，烷基链的长度在调控多种有机溶剂中的胶凝剂性能方面起着关键作用，分子骨架中较长的烷基链有助于有机溶剂的胶凝；形貌研究揭示这些凝胶分子随着溶剂的改变自组装形成不同的聚集体，例如片状、棒状、纤维状等；光谱考察表明，取决于分子骨架中酰胺基团和烷基取代链，形成不同的氢键和疏水作用力。此外，使用的溶剂对于这些双元凝胶剂的组装模式和堆积单元也有明显的作用。该工作为设计新型双元有机胶凝剂和软材料提供了新的思路。The gelation behaviors of binary fatty acids with different length of alkyl chains and glutamic acid amino derivative in various organic solvents were designed and investigated. Their gelation behaviors in 20 solvents were tested as new binary organic gelators. The results showed that the length of alkyl chains has played a crucial role in the gelation behavior of all gelator mixtures in various organic solvents. Longer alkyl chains in molecular skeletons in present gelators are favorable for the gelation of organic solvents. Morphological studies revealed that the gelator molecules self- assemble into different aggregates, such as lamella, rod, belt, and fiber with change of solvents. Spectral studies indicated that there existed different H-bond formation and hydrophobic force, depending on imide segment and alkyl substituent chains in molecular skeletons. In addition, the used solvents had great effect on the assembly modes and stacking units of these binary gelators. The present work may also give new clues for designing new binary organogelators and soft materials.

关 键 词：双元有机凝胶 超分子组装 纳米结构 谷氨酸衍生物 脂肪酸 

分 类 号：O648[理学—物理化学]