基于v形羧酸配体的两种同形Cd/Mn(II) mof的合成及其在Fe3+、硝基芳香炸药和磺胺类抗生素荧光检测中的应用

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-04-09 DOI:10.1016/j.jssc.2025.125366

Xinxin Jia , Wenzhuo Zhang , Shi-Tong Zhang , Xiaolong Luo

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引用次数: 0

摘要

发光金属有机框架（LMOFs）在荧光传感领域具有广阔的应用前景。本研究以 Cd(NO3)2-4H2O 和 Mn(CH3COO)2-4H2O 为金属源，用 5,5'-（5-甲基苯-1,3-二基）二间苯二甲酸（H4MTPTC）构建了两种同构 MOF，即 [Cd4 (MTPTC)2 (DMF)4]-5DMF-2H2O （化合物 1）和 [Mn2 (MTPTC) (DMF)2]-DMF （化合物 2）。拓扑分析表明，化合物 1 和 2 都具有新颖的 3,3,4-c 连接拓扑，顶点符号为 [6.82][62.83.10][62.8]。与 d5 Mn 基 MOF 相比，d10 Cd(II)基 MOF 在硝基芳香族爆炸物传感领域显示出更好的响应，这可能是因为共轭结构单元上的电子密度较低。对金属阳离子、硝基芳香族炸药（NAE）和磺胺类抗生素（SA）的荧光传感实验表明，化合物 1 对 Fe3+、4-硝基苯酚（4-NP）和磺胺嘧啶（SDZ）具有出色的检测能力和可回收性。化合物 1 对 Fe3+、4-NP 和 SDZ 的 Ksv 值（淬灭常数）分别为 1.30 × 105 M-1、4.10 × 105 M-1 和 1.36 × 105 M-1。化合物 1 被证明是检测金属阳离子、NAEs 和 SAs 的理想荧光传感材料。

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Two isomorphic Cd/Mn(II) MOFs based on V-shaped carboxylic acid ligands-synthesis and application in fluorescence detection of Fe3+, nitroaromatic explosives and sulfonamide antibiotics

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Two isomorphic Cd/Mn(II) MOFs based on V-shaped carboxylic acid ligands-synthesis and application in fluorescence detection of Fe3+, nitroaromatic explosives and sulfonamide antibiotics

Luminescent metal-organic frameworks (LMOFs) demonstrate promising applications in the field of fluorescence sensing. In this study, two isomorphic MOFs, [Cd₄ (MTPTC)₂ (DMF)₄]·5DMF·2H₂O (Compound 1) and [Mn₂ (MTPTC) (DMF)₂]·DMF (Compound 2) were constructed using Cd(NO₃)₂·4H₂O and Mn(CH₃COO)₂·4H₂O as metal sources with 5,5’-(5-Methylbenzene-1,3-diyl) diisophthalic acid (H₄MTPTC). Topological analysis reveals that both Compounds 1 and 2 possess novel 3,3,4-c connected topologies with vertex symbols [6.8²][6².8³.10][6².8]. It is considered that the d¹⁰ Cd(II)-based MOF shows a better response in the field of nitroaromatic explosive sensing compared with the d⁵ Mn-based MOF, which may possess lower electron density on the conjugated building blocks. Fluorescence sensing experiments for metal cations, nitroaromatic explosives (NAEs), and sulfonamide antibiotics (SAs) show that Compound 1 exhibits excellent detection capabilities and recyclability for Fe³⁺, 4-nitrophenol (4-NP), and sulfadiazine (SDZ). The K_sv values (quenching constant) of Compound 1 for Fe³⁺, 4-NP, and SDZ are 1.30 × 10⁵ M⁻¹, 4.10 × 10⁵ M⁻¹, and 1.36 × 10⁵ M⁻¹. Compound 1 prove to be ideal fluorescence sensing materials for the detection of metal cations, NAEs, and SAs.

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.