Lanthanide metal–organic frameworks as multifunctional sensors for chemicals and temperature†

IF 2.6 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
CrystEngComm Pub Date : 2025-06-10 DOI:10.1039/D5CE00382B
Yang Lin, Wenxi Zhang, Yanjie Lv, Yihe Zhao, Hongtao Cui, Jing Sun, Xiao Li, Dongling Zhou and Zhongmin Su
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Abstract

Finding simple and effective methods to detect pollutants in the environment has always been a topic of concern. In this study, the application of a conjugated amide tetracarboxylic acid ligand, namely, 5,5′-((pyridine-2,6-dicarbonyl)bis(azadiyl)diterephthalic acid (PDAI), in fluorescence sensing was investigated for the first time. Two two-dimensional isomorphic rare earth metal–organic frameworks, with the general formula [M–(PDAI)–(H2O)] (M = Tb for CUST-923, Eu for CUST-924), were constructed under solvothermal conditions, and they exhibited strong luminescence and good water–acid–base stability. CUST-923 and CUST-924 displayed highly selective recognition ability for Fe3+, Cr2O72−, CrO42− and tetracycline (TCH). In addition, the mixed lanthanide metal–organic framework Eu0.1Tb0.9–PDAI could be used as a temperature sensing material over a wide temperature range, with a maximum relative sensitivity of 2.30% K−1 at 413 K. This work demonstrates the potential of lanthanide metal–organic frameworks as multifunctional sensors for detecting pollutants and manufacturing fluorescence thermometers.

Abstract Image

镧系金属有机框架作为化学和温度的多功能传感器
寻找简单有效的方法来检测环境中的污染物一直是人们关注的话题。本研究首次研究了偶联酰胺四羧酸配体5,5′-(吡啶-2,6-二羰基)双(氮二基)二对苯二甲酸(PDAI)在荧光传感中的应用。在溶剂热条件下构建了两种二维稀土金属-有机骨架,其通式为[M - (PDAI) - (H2O)] (CUST-923 M = Tb, CUST-924 Eu),具有较强的发光性能和良好的水-酸碱稳定性。CUST-923和CUST-924对Fe3+、Cr2O72−、CrO42−和四环素(TCH)具有高度选择性识别能力。此外,混合镧系金属-有机骨架Eu0.1Tb0.9-PDAI可以在较宽的温度范围内用作感温材料,在413 K时的最大相对灵敏度为2.30% K−1。这项工作证明了镧系金属有机框架作为检测污染物和制造荧光温度计的多功能传感器的潜力。
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
CrystEngComm
CrystEngComm 化学-化学综合
CiteScore
5.50
自引率
9.70%
发文量
747
审稿时长
1.7 months
期刊介绍: Design and understanding of solid-state and crystalline materials
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