A new three-dimensional luminescent MOF for the detection of Fe3+, CrO42−, and Cr2O72− in aqueous solution

IF 2.7 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Inorganica Chimica Acta Pub Date : 2024-08-30 DOI:10.1016/j.ica.2024.122347

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Abstract

A new luminescent MOF were synthesized by solvothermal method based on 1,1,2,2-tetrakis(4-(pyridin-4-yl)phenyl)ethene (TPPE), with the molecular structure of [Zn₂(TPPE)_0.5(ndc)₂]_n (ndc = 1,4-Naphthalenedicarboxylic acid) (LMOF-1). The single crystal structure indicates that LMOF-1 stacks in a three-dimensional structure. The fluorescence test results indicate that LMOF-1 emits blue light with quantum yield at 37.93 %, due to ligand–ligand charge transfer. PXRD and TG analysis confirmed that LMOF-1 has good stability, and PXRD analysis after different solvent exchanges confirmed that LMOF-1 has good stability in water. The results of ion titration experiments show that Fe³⁺, CrO₄²⁻, and Cr₂O₇²⁻ have significant quenching effects on LMOF-1, and the detection limits are 3.83 × 10⁻⁶ M, 2.57 × 10⁻⁵ M, and 4.33 × 10⁻⁶ M, respectively. Indicating that LMOF-1 can serve as a multifunctional ion detector.

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用于检测水溶液中 Fe3+、CrO42- 和 Cr2O72- 的新型三维发光 MOF

以1,1,2,2-四(4-(吡啶-4-基)苯基)乙烯（TPPE）为原料，采用溶热法合成了一种新型发光MOF，其分子结构为[Zn2(TPPE)0.5(ndc)2]n（ndc = 1,4-萘二甲酸）（LMOF-1）。单晶结构表明，LMOF-1 呈三维堆积结构。荧光测试结果表明，由于配体与配体之间的电荷转移，LMOF-1 发出量子产率为 37.93 % 的蓝光。PXRD 和 TG 分析证实 LMOF-1 具有良好的稳定性，不同溶剂交换后的 PXRD 分析证实 LMOF-1 在水中具有良好的稳定性。离子滴定实验结果表明，Fe3+、CrO42- 和 Cr2O72- 对 LMOF-1 有显著的淬灭作用，检测限分别为 3.83 × 10-6 M、2.57 × 10-5 M 和 4.33 × 10-6 M。这表明 LMOF-1 可作为一种多功能离子检测器。

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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.