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Exploration of porous adsorbents with high CO 2 /N 2 selectivity is of great significance for reducing CO 2 content in the atmosphere. In this study, a series of isoreticular ultramicroporous fluorinated metal-organic frameworks (MOFs) were prepared to explore the benefits of fluorinated ultramicropores in improving CO 2 /N 2 selectivity. Gas adsorption measurements revealed that the increase in the number of fluorine atoms in a ligand molecule leads to the increased CO 2 uptakes and CO 2 /N 2 selectivity. Theoretical calculations indicate that the interaction between the fluorine atoms and adsorbed CO 2 molecules enhances the CO 2 -philicity, offering useful insight into the improvement of CO 2 /N 2 selectivity in isoreticular frameworks., Competing Interests: There are no conflicts to declare., (This journal is © The Royal Society of Chemistry.)

The modification of inorganic two-dimensional (2D) materials with organic functional motifs is in high demand for the optimization of their properties, but it is still a daunting challenge. Organic metal chalcogenides (OMCs) are a type of newly emerging 2D materials, with metal chalcogenide layers covalently anchored by long-range ordered organic functional motifs, these materials are extremely desirable but impossible to realize by traditional methods. Both the inorganic layer and organic functional motifs of OMCs are highly designable and thus provide this type of 2D materials with enormous variety in terms of their structure and properties. This Minireview aims to review the latest developments in OMCs and their bulk precursors. Firstly, the structure types of the bulk precursors for OMCs are introduced. Second, the synthesis and applications of OMC 2D materials in photoelectricity, catalysis, sensors, and energy transfer are explored. Finally, the challenges and perspectives for future research on OMCs are discussed., (© 2022 Wiley-VCH GmbH.)