Huo Rong, Zeng Guang, Wang Chen, Wang Yu Fei, Xing Yong Heng, Bai Feng Ying
College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian City 116029, P. R. China.
State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, P. R. China.
ACS Appl Mater Interfaces. 2023 Nov 1;15(43):50275-50289. doi: 10.1021/acsami.3c11385. Epub 2023 Oct 20.
Toxic acids produced by industries are major hazards to the environment and human health, and luminescent pyrene-based crystalline metal-organic frameworks (MOFs) demonstrate promising performance in the detection of toxic acids. Herein, two novel isostructural 3D porous lanthanide MOFs, HO·[Ln(TBAPy)(μ-HO)(OH)]·2DMA·2Diox·6.5HO (Ln = Pr () and Ce (); HTBAPy (1,3,6,8-tetrakis(-benzoic acid)pyrene); and DMA: ,-dimethylacetamide) were synthesized, which showed topology. Based on the protonation and hydrogen bond mechanism, complex could be used as a fluorescence recognition sensor for HX (X = F, Cl, Br, and I) acid solutions with different luminescence behaviors. It is worth noting that complex exhibited high sensitivity in the fluorescence enhancement sensing of hydrofluoric acid, oxalic acid, and trichloroacetic acid. In particular, complex had a low limit of detection (LOD) for OA (0.1 μM) and was applied to real monitoring of orange fruit samples. In addition, the PVA@ film could selectively, sensitively, and quantitatively respond to hydrochloric acid (HCl) vapor through fluorescent quenching; due to its protonation and adsorption capacity, the LOD was 0.18 ppm. Therefore, the portable optical device, the PVA@ film, can detect HCl gas in trace amounts, achieving the ultimate goal of real-time and rapid detection, which has potential application value for industrial production safety.
工业生产产生的有毒酸类是环境和人类健康的主要危害，而基于芘的发光晶体金属有机框架材料（MOFs）在检测有毒酸类方面展现出了良好的性能。在此，合成了两种新型的同构三维多孔镧系MOF，HO·[Ln(TBAPy)(μ-HO)(OH)]·2DMA·2Diox·6.5HO（Ln = Pr（）和Ce（）；HTBAPy（1,3,6,8-四（-苯甲酸）芘）；以及DMA：，-二甲基乙酰胺），其具有拓扑结构。基于质子化和氢键机制，配合物可作为HX（X = F、Cl、Br和I）酸溶液的荧光识别传感器，具有不同的发光行为。值得注意的是，配合物在氢氟酸、草酸和三氯乙酸的荧光增强传感中表现出高灵敏度。特别是，配合物对草酸的检测限低（0.1 μM），并应用于橙子果实样品的实际监测。此外，PVA@膜可通过荧光猝灭对盐酸（HCl）蒸气进行选择性、灵敏且定量的响应；由于其质子化和吸附能力，检测限为0.18 ppm。因此，便携式光学器件PVA@膜能够检测痕量HCl气体，实现实时快速检测的最终目标，对工业生产安全具有潜在应用价值。
