摘要
分别以几种小分子氨基化合物为结构骨架 ,连接长链烷基 ,合成了 4种新型凝胶因子 ,其结构通式为R -OCHN -X -NHCO -R .这 4种凝胶因子是一类很好的凝胶化试剂 ,以极低的浓度就可以使DMSO等多种溶剂凝胶化 ,形成热力学可逆的有机凝胶 .透射电子显微镜证明 4种凝胶因子在有机溶剂中 ,可以自我组装成延伸的螺旋缠绕细纤维结构 ,并进一步组装形成三维的空间网络结构 .
Based on the structure R-OCHN-X-NHCO-R, the macroscopic and microscopic properties of gelators from a new family are investigated. Gelators 1 4 derived from 4,4 Diamino diphenyl methane, 1,3 bis(aminomethyl) benzene, 1,6 diaminohexane, 4,4 Diaminodipenyl ether respectively form thermally reversible gels with a wide range of organic solvents, whose concentration are well below 3?%wt. Experiments with a variety of organic fluids demonstrate that specific gelator solvent interactions are not necessary for the gels formation. The compounds are found to be potent gelators for organic solvents, such as DMF, DMSO, toluene, benzene etc. On the condition that melting temperature is up to 90～100?℃ or even at low concentrations, these compounds can be self assembling into elongated and very thin fibers, which in turn form a three dimentional network in the solvents. Infrared studies show that aggregation is accompanied by the formation of a hydrogen bonded network between amide moieties, and TEM photos reveal the gathering of numerous slender fibers. Additionally, the fibers of the gels are helically twisted.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第8期96-98,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 (2 9844 0 0 3)
