直接离子化装置研究新进展

金属有机框架材料（metal organic frameworks, MOFs）是指由金属离子或金属团簇与有机配体形成的一类多孔材料，具有比表面积大、气孔率高和热稳定性能优良等特点，在能源、环境、生物医药等领域应用广泛. 质谱可有效测定各种金属元素的成分和含量，精准分析化合物的组成和结构，其灵敏度高、分析速度快，是表征MOFs的有效技术之一.
在质谱技术中，样品的离子化是进行质谱分析检测的重要前提，因此从常见离子源的原理与特点出发，对采用质谱技术表征MOFs的常用离子源种类、样品要求及产生的离子类型进行总结，并进一步对质谱在MOFs定性、反应监测及应用分析等方面的研究进展进行综述.

Metal-organic frameworks as platforms for catalytic applications

Metal-organic frameworks (MOFs) are a class of porous materials formed with metal ions or oligonuclear metallic complexes and organic ligands. MOFs have a wide range of applications in energy, environment and biomedicine areas due to their high specific surface area, high porosity, excellent thermal stability, etc. Mass spectrometry (MS) can efficiently identify specific metal species and precisely characterize compound composition, and its high sensitivity and fast analysis speed make it one of the effective methods for characterizing MOFs.
In mass spectrometry, ionization of MOFs is an important prerequisite for mass spectrometric analysis and detection. Starting from the principles and characteristics of common ion sources, ion source, sample requirement and types of ions generated for characterizing MOFs by MS are summarized. Furthermore, the associated qualitative analysis, reaction monitoring and applications research of MOFs by MS are reviewed.