Ionogels of pseudogemini supra-amphiphiles in ethylammonium nitrate: Structures and properties

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• 作者：Xiaolin Wang ; Zhuo Zhang ; Yixue Cao ; Jingcheng Hao ; ^{jhao@sdu.edu.cn}
• 关键词：Ionogels ; Ethylammonium nitrate ; Pseudogemini surfactants ; Supramolecular self-assembly ; Structures
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：491
• 期：Complete
• 页码：64-71
• 全文大小：1909 K
• 卷排序：491

文摘

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 2:1 M 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.