Journal
INORGANIC CHEMISTRY
Volume 61, Issue 12, Pages 5067-5075Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.2c00019
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Funding
- Zhejiang Provincial Natural Science Foundation of China [LY20E020007]
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A vinyl-functionalized metal-organic framework (MOF) was synthesized and used to develop a ratiometric fluorescent probe for the quantitative detection of H2S. The MOF-based agarose hydrogel film allowed for the visual detection of H2S via a smartphone. This vinyl-functionalized MOF has the potential to be a powerful sensing platform for H2S.
Detection of H2S in the biological system has attracted enormous attention in recent years. In this work, a new vinyl-functionalized metal-organic framework (MOF), [(Me2NH2)(2)] [Eu-6(mu(3)-OH)(8)(BDC-CH=CH2)(6)(H2O)(6)] (Eu-BDC-CH=CH2, BDC-CH=CH2 = 2-vinylterephthalic acid), was synthesized under solvothermal conditions. The vinyl groups in the ligands can not only modulate the antenna effect of the ligand on Eu3+ ions but also serve as an exposed reactive site to allow for the quantitative detection of H2S by Eu-BDC-CH=CH2. The ratiometric fluorescent probe has the advantages of water stability, acid-base stability (pH = 2-11), fast response (<2 min), high selectivity, and sensitivity (LOD = 38.4 mu M). We also used Eu-BDC-CH=CH2 to detect and analyze H2S in tap and lake waters, demonstrating the potential of the probe for biological and environmental applications. In addition, the MOF-based agarose hydrogel film allows for the visual detection of H2S via a smartphone by identifying the RGB values. The vinyl-functionalized MOF can thus be a powerful sensing platform for H2S.
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