Synthesis and chracterization of new ion-exchangeable metal- organic framework materials

新型离子交换金属有机骨架材料的合成与表征

• 批准号: 2103122
• 金额: --
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2103122
• 关键词: Synthesis; chracterization; new; ion; exchangeable

Metal-organic frameworks (MOFs) are highly crystalline porous materials constructed of single metal ions or polynuclear metal clusters linked by multidentate organic ligands, principally through coordinate bonds. This relatively new family of materials, which offers small density, huge surface to volume ratios, tunable pore structure and flexibility to be functionalized, has developed into one of the most prolific new fields in chemistry and materials science, attracting attention from a wide spectrum of industrial and academic researchers for their interesting properties including catalysis, drug delivery, magnetic, sensor, proton conduction and, in particular, gas (water, hydrogen, carbon dioxide) adsorption and separation. Many applications of existing porous framework materials either depend upon, or are considerably enhanced by, the ability to undergo post-synthetic modification by ion exchange. This approach has also been tried in metal-organic frameworks; its scope is limited, however, by the fact that, of the several hundred different MOFs that have hitherto been reported, the number known to undergo ion exchange remains a tiny subset. This project will explore the synthesis and properties of new MOF materials with significant ion-exchange capacity. This crucial property is of interest in its own right as it can facilitate, for example, the removal and trapping of harmful toxic or radioactive cations, but also enables the fine-tuning of the many useful properties mentioned above.

金属有机骨架(MOF)是由单个金属离子或多核金属团簇通过多齿有机配体主要通过配位键连接而成的高结晶性多孔材料。这一相对较新的材料家族具有密度小、比表面积大、孔结构可调以及可功能化的灵活性，已发展成为化学和材料科学中最多产的新领域之一，因其有趣的性质引起了工业界和学术界的广泛关注，包括催化、药物输送、磁性、传感器、质子传导，特别是气体(水、氢、二氧化碳)的吸附和分离。现有的多孔骨架材料的许多应用要么依赖于通过离子交换进行合成后修饰的能力，要么得到显著的增强。这种方法也曾在金属有机框架中尝试过；然而，其范围受到以下事实的限制：在迄今已报道的数百种不同的MOF中，已知的经历离子交换的数量仍然是很小的一部分。本项目将探索具有显著离子交换能力的新型MOF材料的合成和性能。这一重要性质本身是有意义的，因为它可以促进例如有害有毒或放射性阳离子的清除和捕获，但也能够对上述许多有用的性质进行微调。