Porous materials have attracted considerable interest as water sorbents due to their potential in a broad range of water sorption-related applications. Metal–organic frameworks (MOFs) are particularly notable for their high porosity and tunability. However, their limited hydrolytic stability often results in pore collapse, which significantly hinders their water sorption performance. To address this issue, an innovative design strategy based on reticular chemistry is essential to enhance structural stability and ensure efficient water sorption. Herein, a novel synthetic approach for constructing a merged-net MOF structure using metallolinkers is introduced. Specifically, a porphyrin linker is employed to successfully synthesize a porphyrin-based merged-net MOF, UPF-5. This MOF demonstrates significantly enhanced hydrolytic stability and improved water sorption performance while maintaining high pore volume. Additionally, the structure of UPF-5 allows for the modification of accessible Zr₆ nodes, enabling control over the pore environments and fine-tuning the water sorption properties. This programmable synthetic strategy for porphyrin-based merged-net MOFs not only significantly enhances the structural stability for practical applications, including water sorption, but also advances reticular chemistry by discovering unprecedented topologies in MOF chemistry.

中文翻译：

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用于水吸附的可编程 Merged-Net 卟啉金属有机框架


多孔材料作为水吸附剂因其在广泛的水吸附相关应用中的潜力而引起了相当大的兴趣。金属有机框架 （MOF） 以其高孔隙率和可调性而著称。然而，它们有限的水解稳定性往往会导致孔隙塌陷，从而显着阻碍其水的吸附性能。为了解决这个问题，基于网状化学的创新设计策略对于增强结构稳定性和确保有效的水吸附至关重要。在此，介绍了一种使用金属连接子构建合并网络 MOF 结构的新型合成方法。具体来说，使用卟啉接头成功合成基于卟啉的合并网 MOF，UPF-5。该 MOF 在保持高孔体积的同时，表现出显著增强的水解稳定性和改善的水吸附性能。此外，UPF-5 的结构允许修改可接近的 Zr₆ 节点，从而能够控制孔隙环境并微调水吸附特性。这种基于卟啉的 Merged-net MOF 的可编程合成策略不仅显著提高了实际应用（包括水吸附）的结构稳定性，而且还通过发现 MOF 化学中前所未有的拓扑结构来推进网状化学。