A stable zirconium based metal-organic framework for specific recognition of representative polychlorinated dibenzo-p-dioxin molecules

Bin Wang, Peilong Wang, Lin-Hua Xie, Rui-Biao Lin, Jie Lv, Jian-Rong Li () and Banglin Chen ()
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Bin Wang: Beijing University of Technology
Peilong Wang: Chinese Academy of Agricultural Sciences
Lin-Hua Xie: Beijing University of Technology
Rui-Biao Lin: University of Texas at San Antonio
Jie Lv: Beijing University of Technology
Jian-Rong Li: Beijing University of Technology
Banglin Chen: University of Texas at San Antonio

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Polychlorinated dibenzo-p-dioxins (PCDDs), as a class of persistent and highly toxic organic pollutants, have been posing a great threat to human health and the environment. The sensing of these compounds is important but challenging. Here, we report a highly stable zirconium-based metal-organic framework (MOF), Zr6O4(OH)8(HCOO)2(CPTTA)2 (BUT-17) with one-dimensional hexagonal channels and phenyl-rich pore surfaces for the recognition and sensing of two representative PCDDs, 2,3-dichlorodibenzo-p-dioxin (BCDD) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), based on the fluorescence quenching. BUT-17 exhibits high sensing ability with the detection limits as low as 27 and 57 part per billion toward BCDD and TCDD, respectively, and is very selective as well without the interference of similar compounds. The recognition of BUT-17 toward BCDD is demonstrated by single-crystal structure of its guest-loaded phase, in which the fluorescence-quenched complexes form between the adsorbed BCDD molecules and the MOF host through π-π stacking and hydrogen bonding interactions.

Date: 2019
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DOI: 10.1038/s41467-019-11912-4

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