负压缩率材料具有极其广阔的应用前景，如可用于制备海底光缆、抗震材料、高灵敏度压力传感器等。目前发现的负压缩材料数量极为稀少且负压缩率较小。本项目拟选择三类酒架状金属-有机框架材料为研究对象，结合多种原位高压测量方法及理论计算方法，对相同框架结构下不同组分对材料压缩性质的影响进行系统研究。旨在阐明高压下金属-有机框架材料负压缩的微观机制，进而揭示组分-压缩性质的变化规律，为设计具有高负压缩率的材料提供指导意义和理论依据，为负压缩材料的实际开发和应用提供科学依据。

Materials with negative linear compressibility (NLC) have extensive applicational prospect, such as optical devices used in deep-sea environments, anti-seismic materials, ultra-sensitive pressure sensors, and so on. However, the number of abnormal-compression materials is extremely rare up to now and the values of NLC ever found were very small. This project plans to select three kinds of metal-organic frameworks as the research object combining with a variety of in-situ high-pressure measurement methods and theoretical calculations to systematically study the influence of different components on the abnormal compression properties of materials with the same frameworks. This project aims at clarifying the micro-mechanism of abnormal compression of metal-organic frameworks under high pressure and revealing the variation law of component-compression, furtherly. This project will provide a guidance and theoretical basis for the design of materials with excellent abnormal compression properties. It can also provide a scientific basis for the practical development and application of abnormal compression materials.