AbstractIonic liquids (ILs) have attracted much attention as dispersion media for colloidal systems as alternatives to organic solvents and electrolyte solutions. Although colloidal stability is an essential factor for determining the properties and performance of colloidal systems containing ILs, detailed mechanisms for colloidal stabilization have not yet been studied. In the first part of this paper, we highlight our fundamental studies on colloidal stability. Three different repulsive forces, electrostatic, solvation, and steric interactions, are examined for their effectiveness in stabilizing colloidal particles in ILs. In the second part of this report, we provide an overview of our recent studies on colloidal soft materials in the presence of ILs. On the basis of the suspended state of the silica colloid particles, two different soft materials, a colloidal gel and a colloidal glass, were prepared in ILs. Their functional properties, including ionic transport, rheological, and optical properties, are discussed in relation to the microstructures of the colloidal materials.Soft materials based on colloidal self-assembly in ionic liquids: fundamental studies on the colloidal stability in ionic liquids (ILs) are highlighted. Three different repulsive forces—electrostatic, solvation, and steric—are examined for their effectiveness to stabilize colloidal particles in ILs. An overview of recent studies on colloidal soft materials in the presence of ILs is also provided. Based on suspended states of colloid particles, two different soft materials—colloidal gel and colloidal glass—were prepared in ILs. Their functional properties, including ionic transport, rheological and optical properties, are discussed in relation to the microstructures of the colloidal materials.

中文翻译：

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基于离子液体胶体自组装的软材料

摘要 离子液体（ILs）作为胶体体系的分散介质作为有机溶剂和电解质溶液的替代品而备受关注。尽管胶体稳定性是决定含有 IL 的胶体系统的性质和性能的重要因素，但尚未研究胶体稳定的详细机制。在本文的第一部分，我们重点介绍了我们对胶体稳定性的基础研究。检查了三种不同的排斥力，静电、溶剂化和空间相互作用，以确定它们在稳定 IL 中的胶体颗粒方面的有效性。在本报告的第二部分，我们概述了我们最近对存在 IL 的胶体软材料的研究。根据二氧化硅胶体颗粒的悬浮状态，在离子液体中制备了两种不同的软材料，胶体凝胶和胶体玻璃。它们的功能特性，包括离子传输、流变和光学特性，与胶体材料的微观结构有关。 基于离子液体中胶体自组装的软材料：离子液体 (ILs) 中胶体稳定性的基础研究被突出显示。研究了三种不同的排斥力——静电、溶剂化和空间——以稳定 IL 中的胶体颗粒的有效性。还提供了对存在 IL 的胶体软材料的最新研究的概述。基于胶体颗粒的悬浮状态，在离子液体中制备了两种不同的软材料——胶体凝胶和胶体玻璃。它们的功能特性，包括离子传输，