Citation: Xinyi JIAO, Xin ZHANG, Wanqiao BAI, Xuehua SUN, Huali CUI, Yixia REN, Hongmei CHAI, Loujun GAO. A Eu-based metal-organic framework fluorescent film: Preparation and sensing of Cr₂O₇^2- and tryptamine[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(5): 1113-1120. doi: 10.11862/CJIC.20250298 shu

A Eu-based metal-organic framework fluorescent film: Preparation and sensing of Cr₂O₇^2- and tryptamine

Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan′an University, Yan′an, Shaanxi 716000, China

Corresponding author: Hongmei CHAI, chm8550@163.com Loujun GAO, glj@yau.edu.cn
Received Date: 23 September 2025
Revised Date: 1 April 2026

Figures(6)

To address the challenges of poor solubility and difficult recyclability of powdered metal-organic frameworks (MOFs), a Eu-based MOF complex, [EuNa(L)(H₂O)₃]·2H₂O (Eu/Na-MOF), was synthesized by the hydrothermal method using 3,5-bis(3,5-dicarboxyphenyl)-1H-1,2,4-triazole (H₄L) as the ligand in this study. Systematic characterization and performance evaluation revealed that the complex exhibits a unique 3D structure, high phase purity, excellent thermal stability, and outstanding luminescent properties. Furthermore, the complex was encapsulated in poly(methyl methacrylate) (PMMA) to fabricate a flexible and water-washable composite fluorescent film (Eu/Na-MOF/PMMA). Based on static and dynamic quenching mechanisms, respectively, the film enables reversible detection of tryptamine and Cr₂O₇^2- ions in aqueous solutions, demonstrating high selectivity, stability, and portability.
- metal-organic framework,
- Eu/Na-MOF fluorescent film sensor,
- tryptamine,
- Cr₂O₇^2-,
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

A Eu-based metal-organic framework fluorescent film: Preparation and sensing of Cr2O72- and tryptamine

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通讯作者: 陈斌, bchen63@163.com

A Eu-based metal-organic framework fluorescent film: Preparation and sensing of Cr₂O₇^2- and tryptamine