Structural changes in metal-organic framework materials

金属-有机框架（M0 F）是由通过有机连接体连接的金属节点组成的杂化材料。金属节点和连接体的系统取代，一种被称为晶体工程的实践，提供了一系列不同的材料，这些材料在催化，气体吸附，分离和药物输送中具有潜在的应用。这导致了比表面积超过5，000 m2 g-1的材料的发现，这些材料目前应用于水收集，CO2分离和有毒气体储存环境。考虑到（i）在气体吸附应用中对热稳定性的要求，（ii）通过熔融获得新的功能玻璃的可能性和（iii）在使用在室温和压力附近经历相变的MOF的压热应用中的兴趣，该家族内的结构转变是非常重要的。该项目将特别使用差示扫描量热法，结合X射线衍射，对分布函数和气体吸附测量来研究各种MOFs的相变行为，以及它们对环境修复，触觉，发光和制冷技术应用的影响。

Metal-organic frameworks (MOFs) are hybrid materials comprised of metal nodes connected via organic linkers. Systematic substitution of metal nodes and linkers, a practice known as crystal engineering, has afforded a diverse family of materials that have found potential applications in catalysis, gas sorption, separations and drug delivery. This has led to the discovery of materials with specific surface areas in excess of 5,000 m2 g-1, which are currently applied in water harvesting, CO2 separation and toxic gas storage settings. Structural transitions within the family are of great importance given (i) the requirement for thermal stability in gas sorption applications, (ii) the possibility of obtaining new functional glasses by melting and (iii) interest in barocaloric applications using MOFs which undergo phase changes near room temperature and pressure. This project will use differential scanning calorimetry in particular, combined with X-ray diffraction, pair distribution function and gas sorption measurements to investigate the phase change behaviour of a variety of MOFs, and their impact upon applications in environmental remediation, haptic, light emitting and refrigeration technologies.