Huangfu Mengjie, Wang Man, Lin Chen, Wang Jian, Wu Pengyan
School of Chemistry and Materials Science & Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China.
Dalton Trans. 2021 Mar 16;50(10):3429-3449. doi: 10.1039/d0dt04276e.
Metal-organic frameworks (MOFs), composed of metal ions/clusters and organic ligands and possessing inherent crystallinity, a definite structure, a tunable pore, and multiple functionalizations, have shown potential for numerous applications. Recently, luminescent MOFs (LMOFs) have attracted much attention as sensing materials because their structural and chemical tunability can afford good selectivity through pore-sieving functions with different pore sizes or host framework-guest interactions. Meanwhile, MOFs with high internal surface areas can concentrate analytes to a high density, thereby decreasing detection limits and exhibiting high sensitivity. Numerous LMOFs have been synthesized and employed for sensing applications. Here, the recent advances of LMOFs as chemical sensors based on "mechanism-response" were summarized, including collapse of frameworks, overlap, cation exchange, ligand exchange, reaction- and redox-based mechanisms, electron transfer, energy transfer, hydrogen bonding, linker-analyte interaction, synergistic effects, and multiple interactions. Moreover, in this review, present challenges and future opportunities in this field are discussed. This review could be a valuable reference for the rational construction and sensing applications of LMOFs.
金属有机框架材料（MOFs）由金属离子/簇和有机配体组成，具有固有的结晶性、确定的结构、可调节的孔隙以及多种功能化特性，已在众多应用中展现出潜力。近来，发光金属有机框架材料（LMOFs）作为传感材料备受关注，因为其结构和化学可调节性能够通过不同孔径的孔筛分功能或主体框架 - 客体相互作用提供良好的选择性。同时，具有高内表面积的MOFs能够将分析物浓缩至高密度，从而降低检测限并展现出高灵敏度。众多LMOFs已被合成并用于传感应用。在此，总结了基于“机制 - 响应”的LMOFs作为化学传感器的最新进展，包括框架坍塌、重叠、阳离子交换、配体交换、基于反应和氧化还原的机制、电子转移、能量转移、氢键、连接体 - 分析物相互作用、协同效应以及多种相互作用。此外，在本综述中，还讨论了该领域当前面临的挑战和未来机遇。本综述可为LMOFs的合理构建和传感应用提供有价值的参考。
