2025年诺贝尔化学奖授予S. Kitagawa、R. Robson和O. M. Yaghi，以表彰他们在金属有机框架(Metal-Organic Frameworks，MOFs)开发方面的成就。作为21世纪的明星材料，MOFs因其巨大的比表面积、纳米级孔道以及多样的拓扑结构，在众多领域得以应用。作为最先进的多孔材料，MOFs的应用不再局限于气体吸附、分离和催化等传统领域，在大气集水、病原体检测和海水提铀等新兴领域也展现出广阔的应用前景。2013年，Yaghi在Science上发表了一篇有关MOFs最佳性能的重要综述。但从那以后，MOFs的性能又取得了重大突破。通过网状化学原理指导无机阳离子(节点)与有机配体(连接体)的组装，可以构筑混合组分的MOFs，使单组分MOFs优异性能的协同组合得以实现。将人工智能技术引入MOFs领域，能够为科学家们提供更多的机会，以快速设计和制造具有定制性能的新型MOFs。此外，基于反向MOFs设计策略(带负电荷的节点和带正电荷的配体)合成的新型多孔等网状non-MOFs材料将为MOFs材料开辟一个新的研究热点。

Three new 3-pyridazinyl-substituted triaryltriazoles, 4-(4-R-phenyl)-3-(2-pyridyl)-5-(3-pyridazinyl)-1,2,4-triazole (L¹: R=OCH₃; L²: R=H; L³: R=F) and their Cu(Ⅱ) complexes, trans-[Cu(L¹)₂(NO₃)₂]·H₂O (1), trans-[Cu(L²)₂(NO₃)₂] (2) and trans-[Cu(L³)₂(H₂O)₂](NO₃)₂ (3), have been synthesized and characterized by FTIR, ¹H NMR, elemental analysis and single crystal X-ray crystallography. Crystal structure analyses reveal that the supramolecular trimer (L¹)₃ and complex 3 crystallize in the triclinic P1 space group, the ligand L² and complexes 1 and 2 belong to the monoclinic P2₁/c space group, while the ligand L³ crystallizes in the monoclinic P2₁/n space group. There is a hydrogen-bonded trimer (L¹)₃ in the asymmetric unit of the ligand L¹. In the complexes 1-3, there is a distorted [CuN₄O₂] octahedron with two NO₃^- ions located in the axial positions in 1 and 2, whereas the two water molecules occupy the axial sites in 3. In the equatorial plane of 1-3, each L ligand adopts a chelating bidentate mode to bind the Cu(Ⅱ) ion through the pyridyl N atom and one triazole N atom, leaving the pyridazinyl group uncoordinated. The intermolecular interactions in the free ligands and the complexes have been explored by 3D Hirshfeld surface analyses and 2D fingerprint plots to reveal that the main intermolecular interactions are H…H and C…H/H…C contacts in (L¹)₃, H…H and N…H/H…N contacts in L², H…H, N…H/H…N and C…H/H…C in L³, H…H and O…H/H…O contacts in both 1 and 2, H…H, N…H/H…N and O…H/H…O contacts in 3.