Development of metal-organic framework (MOF) films is of great importance to expand their applications. Herein, we report a facile and universal method of liquid-phase epitaxial (LPE) layer by layer (LBL) brushing approach for fabricating MOF films on various substrates in a high-throughput fashion. This MOF films preparation method offers a great prospective to cost-effectively construct films with short preparation time and little reagent consumption. Moreover, this LBL brushing approach has been implemented successfully to assemble various MOF films, including HKUST-1, zeolitic imidazolate framework-8 (ZIF-8), Cu(bdc), and Cu₂(L)₂P (L = bdc, ndc, and cam; P = dabco and bipy). Afterwards, the classic MOF HKUST-1 and ZIF-8 films were grown on sensor chip electrode and porous fiber support for good volatile organic compounds (VOCs) selective sensing and water purification applications. This study demonstrates that this LBL brushing preparation method can be employed to synthesize various MOF films with a variety of characteristics to realize their sensing and separation applications.

金属有机骨架（MOF）薄膜的发展对于扩大其应用具有重要意义。在此，我们报告了一种简便且通用的液相外延（LPE）逐层（LBL）刷涂方法，用于以高通量方式在各种基材上制造 MOF 薄膜。这种MOF薄膜制备方法为经济高效地构建薄膜提供了广阔的前景，制备时间短，试剂消耗少。此外，这种 LBL 刷涂方法已成功用于组装各种 MOF 薄膜，包括 HKUST-1、咪唑骨架沸石 8 (ZIF-8)、Cu(bdc) 和 Cu ₂ (L) ₂ P (L = bdc， ndc 和 cam；P = dabco 和 bipy）。随后，在传感器芯片电极和多孔纤维支撑上生长经典的 MOF HKUST-1 和 ZIF-8 薄膜，以实现良好的挥发性有机化合物 (VOC) 选择性传感和水净化应用。这项研究表明，这种LBL刷涂制备方法可用于合成具有多种特性的各种MOF薄膜，以实现其传感和分离应用。