Property Changes of Multiphasic Fluids by Geometrical Confinement in Advanced Mesoporous Materials

被限制在纳米尺寸的多孔几何结构中的流体表现出独特的性质，而这些性质在相应的体积系统中是没有等效的。因此，它们具有很高的技术创新潜力，值得广泛关注。在这种情况下，科学界被鼓励提高纳米限制液体的基础知识。在过去的十年中，人们对介孔介质中流体的物理化学性质进行了大量的研究。总的来说，表面-液体相互作用的性质和约束的几何参数容易影响相行为、结构、动力学和流体流动，从而导致原始的物理化学现象。该领域的下一步将是以理想的方式指导纳米流体的（新）特性。许多被研究的系统包含一个单一的流体相，被限制在“被动”多孔材料中，这被视为此类开发的瓶颈。出于这个原因，纳米液体项目的重点是探索新系统的特性，这些新系统将基于多组分流体的纳米限制，使其成为具有周期性表面化学交替的功能化多孔材料，从而实现前所未有的界面控制。从对体二元体系的中尺度结构和动力学的研究出发，探索在特定介孔介质中限制的混合物的物理化学性质。特别是诸如微相分离、气体溶解度增强和流体流变学的限制引起的变化以及这些现象的相互作用等效应将是研究的重点。这些研究只有结合物理和化学中大量的互补方法和技能，包括实验和数值，包括从分子到宏观尺度的时间和空间窗口，才能实现，并为拟议的法德合作提供强大的附加价值。

Fluids confined in nanometer-size porous geometry exhibit unique properties that have no equivalent in the corresponding bulk systems. As such, they deserve an extensive interest for their high potential of technological innovation. In this context, the scientific community has been encouraged to improve the ground basis knowledge of nanoconfined liquids. During the last decade, an impressive number of physico-chemical properties have been studied when confining a fluid in a mesoporous medium. As a whole, it appears that the nature of the surface-liquid interaction and the geometric parameters of confinement readily affect the phase behavior, structure, dynamics and fluid flow, leading to original physico-chemical phenomena.The next step in the field would be to direct the (new) properties of nanofluids in a desired manner. Many of the studied systems comprised a single fluid phase confined in a ‘passive’ porous material, which is seen as a bottleneck to such developments. For this reason, the intension of the NanoLiquids project, is to explore the properties of new systems that would allow for an unprecedented control of interfaces based on the nanoconfinement of multicomponent fluids into functionalized porous materials with periodically alternating surface chemistry. Starting from examinations of the mesoscale structure and dynamics of the bulk binary systems the physico-chemical properties of mixtures confined in tailored mesoporous media shall be explored. In particular effects such as microphase separation, enhanced gas solubility and confinement-induced changes in the fluid rheology as well as the interplay of these phenomenologies will be in the research focus. These studies will be possible only by the combination of an extensive number of complementary methods and skills in physics and chemistry, both experimental and numerical, encompassing temporal and spatial windows that range from the molecular to the macroscopic scales and provide a strong added value to the proposed French-German collaboration.