油纸伞是中国具有千年历史的传统手工艺品，也是中国传统文化的重要象征。本文以一位老工匠为即将出嫁的女儿制作油纸伞作为嫁妆的故事为背景，深入探讨油纸伞制作过程中蕴含的化学原理，包括碱法制浆、柿漆粘结、朱砂附着和桐油防水等关键工艺。同时，本文挖掘其背后的思政元素，将文化、化学与思政教育有机结合，实现知识传授与价值引领的统一。

We used pentacarboxylic acid ligand 3, 5-di(2', 4'-dicarboxylphenyl) benzoic acid (H₅L) to synthesize two structural similarity lanthanide-cobalt heteronuclear bimetallic organic frameworks (Ln-Co-MOFs) by hydrothermal method: (C₂H₆NH₂)₅{[Eu₉Co(L)₆(H₂O)₅(OH)₄] ·5DMF}_n (1), (C₂H₆NH₂)₂{[Sm₉Co(L)₆(H₂O)₃Cl] ·5DMF}_n (2). The structures were characterized and the property was tested by single crystal X-ray diffraction, powder X-ray diffraction, thermogravimetry, infrared, fluorescence spectra, and magnetism. The results show that 1 and 2 both belong to the trigonal R3 space group and have novel 3D structures and good thermal stability. Among them, 1 has strong fluorescence properties, which can sensitively identify drug molecules sulfasalazine and organic molecules glutaraldehyde. The detection limits could reach 0.95 and 2.10 μmol·L^-1, respectively. In addition, 1 and 2 were antiferromagnetic at 1 kOe.