Structural changes in metal-organic framework materials

金属有机骨架材料的结构变化

• 批准号: 2738218
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2738218
• 关键词: Structural; changes; metal; organic; framework

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.

金属有机骨架是由金属节点通过有机连接体连接而成的杂化材料。系统地取代金属节点和连接体，一种被称为晶体工程的实践，已经提供了各种各样的材料，这些材料在催化、气体吸附、分离和药物输送方面有潜在的应用。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集水、二氧化碳分离和有毒气体储存环境。考虑到(i)气体吸附应用中对热稳定性的要求，（ii）通过熔融获得新功能玻璃的可能性，以及（iii）使用在室温和室温下发生相变的mof的压热应用的兴趣，该家族中的结构转变非常重要。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mof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。