功能流体构建二维金属-有机框架材料的溶剂效应研究

Two-Dimensional Metal-Organic Framework (2D MOF) is an emerging class of graphene-like material, and solvent effects are essential for 2D MOF construction. However, there is still lack of insights into the solvent effects during the 2D MOF formation. In this project, ionic liquids are used as functional liquids taking the advantages of solubility, directing, stability and π-π stacking, hydrogen bonding, electrostatic interaction. A series of solvent systems involving ionic liquids are designed to prepare 2D MOF. Physical exfoliation and chemical assembly in solutions are applied to 2D MOF construction; the solvent effects on 2D MOF formation are fully explored and the intrinsic relationship between solvent effects and properties of 2D MOF is discussed. The mechanism of 2D MOF formation in presence of ionic liquid is revealed; catalytic performance of 2D MOF is investigated in coupling reaction between alcohol and amine, and structure-activity relationship is established. This research will open up new opportunities for 2D MOF synthesis and application, deepen the understanding of ionic liquid solvent effects during the 2D MOF synthesis and broaden the connotation of 2D materials. So it is very important to study 2D MOF construction in green solvents involving ionic liquid for both academic sense and applied value.

二维金属-有机框架纳米材料（2D MOF材料）是一种新型类石墨烯材料，溶剂体系是影响2D MOF材料剥离制备与自组装的关键问题。然而，对于2D MOF材料构建过程的溶剂效应规律和机理尚缺乏清楚认识。本项目以离子液体作为功能流体，通过设计多种离子液体溶剂体系，利用离子液体作为溶剂、导向剂、分散稳定剂、电荷平衡剂以及其π-π堆叠、氢键、静电相互作用等多重功能，采用层状MOF液相剥离法和溶液自组装法构建2D MOF材料；系统研究溶剂性质对2D MOF材料剥离制备和自组装的调控规律，揭示离子液体在2D MOF材料构建过程中的溶剂效应规律和机理；探索2D MOF材料在醇胺偶联催化反应中的应用，建立MOF结构与催化反应活性之间的构效关系。离子液体剥离与组装法将为2D MOF材料制备提供新途径，加深对离子液体溶剂效应规律的认识和理解，拓宽2D 纳米材料的研究内涵，具有重要的理论意义和应用价值。

二维金属-有机框架纳米材料（2D MOF材料）是一种新型类石墨烯材料，溶剂体系是影响2D MOF材料剥离制备与组装的关键问题。然而，对于2D MOF材料构建过程的溶剂效应规律和机理尚缺乏清楚认识。本项目通过设计多种绿色溶剂体系，包括离子液体、低共熔溶剂及其混合溶剂等，采用“自上而下”层状MOF液相剥离法和“自下而上”组装法构建多种2D MOF材料；系统研究溶剂性质，如表面张力、相互作用能、氢键、亲疏水性、-堆叠、静电相互作用等，对2D MOF材料制备和组装的调控规律，揭示离子液体在2D MOF材料构建过程中的溶剂效应规律和机理；探索2D MOF材料在离子检测、电催化反应中的应用，建立MOF结构与应用性能之间的构效关系。离子液体等绿色溶剂剥离与组装法将为2D MOF材料构建提供新途径，加深对离子液体溶剂效应规律的认识和理解，拓宽2D 纳米材料的研究内涵，具有重要的理论意义和应用价值。