A Stable Viologen-Based Metal–Organic Framework for Fluorescence Detection of Nitroaromatics and Nitrofuran Antibiotics in Water

IF 3.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Crystal Growth & Design Pub Date : 2025-01-28 DOI:10.1021/acs.cgd.4c0170910.1021/acs.cgd.4c01709

Shi Zhang, Yudie Zhou, Anna Tuo, Shufan Chen, Qingfu Zhang, Xu Zhang, Kecai Xiong* and Yanli Gai*,

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Abstract

The solvothermal reaction of In³⁺ and 1,1′-bis(4-carboxyphenyl)-(4,4′-bipyridinium) dichloride (H₂bcbpCl₂) in the presence of oxalate resulted in the formation of a 3D metal–organic framework (1) with a 6⁵.8 topology. Compound 1 features a unique oxalate-bridged honeycomb (hcb) layer [In₂(μ₂-C₂O₄)₃]_∞, pillared by bcbp ligands. To the best of our knowledge, this presents the first documented 3D metal–organic coordination polymer constructed by an oxalate-bridged hcb layer. Remarkably, compound 1 demonstrates selective detection of nitroaromatics and nitrofurans in water through a fluorescence quenching mechanism, exhibiting high quenching efficiencies (K_sv) and low limits of detection (LOD). Mechanistic studies reveal that this quenching phenomenon is attributed to photoinduced electron transfer (PET), inner filter effect (IFE) and fluorescence resonance energy transfer (FRET). Moreover, compound 1 displays photochromic properties, with the structural variations and electron transfer pathways elucidated through single-crystal X-ray diffraction (SC-XRD) analysis.

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来源期刊

Crystal Growth & Design 化学-材料科学：综合

CiteScore

6.30

自引率

10.50%

发文量

650

审稿时长

1.9 months

期刊介绍： The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.

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