A High Selective and Sensitive Cr2O72−sensing by a Reusable Cu-based metal-organic Framework

IF 3.6 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Cluster Science Pub Date : 2025-08-30 DOI:10.1007/s10876-025-02905-z

Lili Yang, Ruiqin Yang, Huailan Zhou, Ke Su, Lu Yang

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引用次数: 0

Abstract

The utilization of metal-organic frameworks (MOFs) as luminescent sensors towards specific ions or molecular sensing has garnered significant attention, owing to their porous and easy-decorated feature. Herein, a Cu-based MOF (noted as SQ-1) has been synthesized using 5-amino-isophthalic acid as a bridging ligand. The SQ-1 was structurally characterized and demonstrated good thermal and water stability. Additionally, the benign luminescent properties of the ligands suggest its potential application as a luminescent sensor for detecting various anions. Notably, SQ-1 exhibited a remarkable selective and sensitive sensing ability towards Cr₂O₇²⁻ compared to other anions via luminescence quenching response, with the K_sv of 3.98 × 10⁴ M⁻¹ and detection limit of 4.32 µM. The quenching mechanism has been explored. Furthermore, this Cu-based MOF shows promise as a reusable luminescent sensor, maintaining functionality over three consecutive sensing cycles.

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基于可重复使用铜基金属有机骨架的高选择性和高灵敏度Cr2O72−传感

金属有机框架（mof）由于其多孔性和易于修饰的特点，作为特定离子或分子传感的发光传感器受到了广泛的关注。本文以5-氨基间苯二甲酸为桥接配体，合成了cu基MOF（标记为SQ-1）。SQ-1的结构表征和表现出良好的热稳定性和水稳定性。此外，配体的良性发光特性表明其作为检测各种阴离子的发光传感器的潜在应用。值得注意的是，与其他阴离子相比，SQ-1通过发光猝灭响应对Cr2O72−表现出了显著的选择性和灵敏的传感能力，Ksv为3.98 × 104 M−1，检出限为4.32µM。探讨了淬火机理。此外，这种基于cu的MOF有望成为可重复使用的发光传感器，在三个连续的传感周期内保持功能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Cluster Science 化学-无机化学与核化学

CiteScore

6.70

自引率

0.00%

发文量

166

审稿时长

3 months

期刊介绍： The journal publishes the following types of papers: (a) original and important research; (b) authoritative comprehensive reviews or short overviews of topics of current interest; (c) brief but urgent communications on new significant research; and (d) commentaries intended to foster the exchange of innovative or provocative ideas, and to encourage dialogue, amongst researchers working in different cluster disciplines.