Two new 2D coordination polymers as a fluorescence “turn-on” probe for highly selective and sensitive detection of Sparfloxacin

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Inorganica Chimica Acta Pub Date : 2025-02-06 DOI:10.1016/j.ica.2025.122565

Guiling Gao , Yiming Ren , Lei Wang , Xuanqi Zhang , Xiaoyong Lai , Qin Hou , Yi Li , Zhiyong Teng , Xiaozhong Wang , Qingfeng Yang

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Abstract

High selectivity detection and fast response for Sparfloxacin (Spa) is always a challenge. In this paper, two new coordination polymers [InCl(PPA)(H₂O)]_n·nH₂O (1) and [La(PPA)(ox)_1/2(H₂O)]_n (2). (H₂PPA = 3-(pyridin-3-yloxy)phthalic acid, H₂ox = oxalic acid) were synthesized by hydrothermal method and analyzed in depth by X-ray single crystal diffraction, elemental analysis, IR spectroscopy, PXRD and thermogravimetric analysis. Both compounds 1 and 2 display 2D layered structures. Notably, these two compounds behave as fluorescent sensors toward Spa with high sensitivity, selectivity with low detection limits of 18.16 and 48.17 nM, respectively. The present work investigated the mechanism of fluorescence enhancement by Spa for both compounds, which may be the result of the interaction between Spa and ligand. It is worth noting that for the first time, the coordination polymer was established to detect Spa by fluorescence sensing method.

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两种新的二维配位聚合物作为荧光“开启”探针，用于高选择性和高灵敏度的斯帕沙星检测

司帕沙星（Spa）的高选择性检测和快速响应一直是一个难题。本文采用水热法合成了两种新型配位聚合物[InCl(PPA)(H2O)]n·nH2O(1)]和[La(PPA)(ox)1/2(H2O)]n (2). （H2PPA = 3-（吡啶-3-氧基）邻苯二甲酸，H2ox =草酸），并用x射线单晶衍射、元素分析、红外光谱、PXRD和热重分析对其进行了深入分析。化合物1和2均显示二维层状结构。值得注意的是，这两种化合物对Spa具有高灵敏度和选择性的荧光传感器，检测限分别为18.16 nM和48.17 nM。本文研究了Spa对这两种化合物荧光增强的机理，这可能是Spa与配体相互作用的结果。值得注意的是，首次建立了用荧光传感方法检测Spa的配位聚合物。

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来源期刊

Inorganica Chimica Acta 化学-无机化学与核化学

CiteScore

6.00

自引率

3.60%

发文量

440

审稿时长

35 days

期刊介绍： Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews. Topics covered include: • chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies; • synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs); • reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models; • applications of inorganic compounds, metallodrugs and molecule-based materials. Papers composed primarily of structural reports will typically not be considered for publication.