Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials, Shandong University, Ministry of Education, Jinan 250100, China.
Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials, Shandong University, Ministry of Education, Jinan 250100, China.
J Colloid Interface Sci. 2017 Apr 1;491:64-71. doi: 10.1016/j.jcis.2016.12.031. Epub 2016 Dec 18.
Thermoreversible ionogels formed by pseudogemini surfactants were prepared in protic ionic liquid, ethylammonium nitrate (EAN). Gemini-type supra-amphiphiles were formed by single-chain surfactants and bola-type molecules in a 2:1M ratio. The structures of aggregates including polymorphous lamellar structures and fibrous networks constituted by multilayer lamellae were determined by optical microscopy observations, transmission electron microscopy (TEM) observations, small-angle X-ray scattering (SAXS) and X-ray diffraction (XRD) measurements. The mechanism of molecular arrangement in aggregates was proposed. Transformation temperatures of samples which are closely related to the stability of well-ordered molecules in aggregates, as well as the rheological properties of ionogels were investigated systematically. The work affords a new way to construct ionogel by using the supramolecular self-assembly of pseudogemini-type molecules, and brings new ideas for the future construction of ionogels.
由拟双子表面活性剂形成的温敏离子凝胶是在质子离子液体硝酸乙基铵（EAN）中制备的。双子型超两亲分子由单链表面活性剂和 bola 型分子以 2:1M 的比例形成。通过光学显微镜观察、透射电子显微镜（TEM）观察、小角 X 射线散射（SAXS）和 X 射线衍射（XRD）测量确定了包括多晶层状结构和由多层片层构成的纤维网络在内的聚集体的结构。提出了聚集体中分子排列的机制。系统研究了与聚集体中有序分子稳定性密切相关的样品转变温度以及离子凝胶的流变性能。这项工作为使用拟双子型分子的超分子自组装构建离子凝胶提供了一种新方法，并为未来离子凝胶的构建带来了新的思路。
