Triazine-Based Hexacarboxylate Metal–Organic Framework Crystalline Materials: Synthesis, Structural Characterization, and Fluorescence Response toward NACs and Small Drug Molecules

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-04-28 DOI:10.1021/acs.inorgchem.5c0022110.1021/acs.inorgchem.5c00221

Yan Yan Ma, Jin Long Li, Bing Li, Feng Ying Bai, Qing Lin Guan* and Yong Heng Xing*,

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Abstract

A new triazine-based polycarboxylate metal–organic framework with a three-dimensional microporous structure, (H₃O)₂·[Eu₂(TDPAT)_4/3(μ-H₂O)]·7H₂O·EtOH·5DMA (complex 1), was constructed by the reaction of the ligand 2,4,6-tris(3,5-dicarboxyaniline)-1,3,5-triazine (H₆TDPAT) and EuCl₃·6H₂O under solvothermal conditions. It was characterized by infrared spectroscopy (IR), ultraviolet–visible (UV–vis) spectra, fluorescence spectra, powder X-ray diffraction (PXRD), thermogravimetric (TG) analysis, etc. Structural analysis shows that the three-dimensional microporous structure is constructed by a binuclear structural unit [Eu₂(COO)₂(μ-H₂O)] and a TDPAT ligand. Fluorescence sensing exploration was conducted for complex 1, and experiments found that various drug molecules and phenolic compounds are responsible for the observed fluorescence quenching. Among them, the fluorescence quenching constant K_SV of complex 1 for the drug molecule moxifloxacin hydrochloride is as high as 1.57 × 10⁵ M^–1. In addition, it was found that the detection effect of complex 1 for nitrophenols is superior to that of chlorinated phenols. Therefore, complex 1 is expected to become a multifunctional fluorescent sensor in the future.

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基于三嗪的六羧酸金属-有机骨架晶体材料：合成、结构表征和对NACs和小药物分子的荧光响应

以配体2,4,6-三（3,5-二羧基苯胺）-1,3,5-三嗪（H6TDPAT）与EuCl3·6H2O在溶剂热条件下反应，构建了具有三维微孔结构的（h30o）2·[Eu2(TDPAT)4/3(μ-H2O)]·7H2O·EtOH·5DMA（配合物1）。采用红外光谱（IR）、紫外可见光谱（UV-vis）、荧光光谱、粉末x射线衍射（PXRD）、热重分析（TG）等方法对其进行了表征。结构分析表明，三维微孔结构由双核结构单元[Eu2(COO)2(μ-H2O)]和TDPAT配体构成。对配合物1进行荧光传感探索，实验发现多种药物分子和酚类化合物导致了观察到的荧光猝灭。其中，配合物1对药物分子盐酸莫西沙星的荧光猝灭常数KSV高达1.57 × 105 M-1。此外，还发现配合物1对硝基苯酚的检测效果优于氯代苯酚。因此，配合物1有望在未来成为多功能荧光传感器。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.