Assembly of a pyrene-based zinc(II)-organic framework with fluorescence property for selective sensing of nitroaromatic compounds. (1st November 2021)

• Record Type: Journal Article
• Authors: Zhang, Hao; Geng, Wu-Yue; Luo, Yu-Hui; Ding, Zi-Jun; Wang, Zhi-Xuan; Xie, A-Di; Zhang, Dong-En
• Is Part Of: Polyhedron. Volume 208(2021)
• Publication Date: 2021-11-01
• Subjects: Metal-organic framework -- Zinc(II) -- Pyrene -- Fluorescence sensing -- Nitroaromatic compounds; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2021.115439
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: A newly pyrene functionalized zinc(II)-MOF was solvothermal synthesized and developed for fluorescence sensing of nitroaromatic compounds due to its good photoluminescence properties. Abstract: In this work, a zinc(II)-based metal–organic framework, namely [Zn2 (TBAPy)(H2 O)(DMF)]·4DMF·2H2 O (JOU-34 ) (TBAPy = 1, 3, 6, 8-tetrakis (p-benzoic acid) pyrene; DMF = N, N'-Dimethylformamide), has been solvothermally synthesized and characterized. Single-crystal X-ray diffraction shows that JOU-34 displays three-dimensional microporous framework with rare topology. Due to the introduction of pyrene groups, JOU-34 shows strong fluorescent emission cantered at about 470 nm. Furthermore, it shows a good fluorescence sensing performance toward nitroaromatic compounds, especially nitrobenzene (NB). Although the NB concentration was only 8.33 × 10 −4 M, the quenching efficiency can reach 89 %. Further studies show that the quenching effect of JOU-34 in the presence of nitroaromatics may be attributed to the fluorescence resonant energy transfer and electron transfer between nitroaromatics and JOU-34 . These results indicate that JOU-34 can be applied as a functional material for nitroaromatics detection.