A MOF-on-MOF composite encapsulating sensitized Tb(III) as a built-in self-calibrating fluorescent platform for selective sensing of F ions

Li, Jingyu; Liu, Miao; Li, Jiaxuan; Liu, Xianhua

doi:10.1016/j.talanta.2023.124521

Cited by 20 publications

(2 citation statements)

References 45 publications

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“…Recently, a fluorescence sensing method based on lanthanide(III) metal–organic framework (Ln-MOF) materials has been confirmed to be a promisingly available platform for the detection of hazardous substances due to its superior sensitivity and selectivity, convenient utilization, durable reversibility, and has attracted more and more attention. − Benefiting from the unique photoluminescence behavior of the lanthanide(III) ions and organic ligands, the effective energy-transfer processes of a fluorescence Ln-MOF material could be adapted to the regulation of the organic ligands for achieving the sensitization process via an “antenna effect”, thus achieving the simultaneous photoluminescence of lanthanide(III) ions and organic ligands − Moreover, a fluorescence Ln-MOF material can realize the structural modifiable functionality by the encapsulation of some desired fluorescence matrix, thereby providing access to tuning the fluorescence dynamics through the influence of versatile encapsulated fluorescence matrix composites within the Ln-MOF material. − In principle, the regulations of the fluorescence Ln-MOF behaviors could be readily achieved by the optimization of fluorescence centers such as the lanthanide(III) ions, the organic ligands, and the versatile encapsulated fluorescence matrix composites, − which endow superior applications of a Ln-MOF material for fluorescence sensing behaviors. In general, there have been two fluorescence sensing forms of the Ln-MOF material.…”

Section: Introductionmentioning

confidence: 99%

On–Off Ratiometric Fluorescence Europium(III) Metal–Organic Framework for Quantitative Detection of the Inflammatory Marker Neopterin

Hong,

Li,

Zou

et al. 2024

Inorg. Chem.

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Benefiting from the unique photoluminescence behavior of the lanthanide(III) ions and organic ligands, a lanthanide(III) metal−organic framework (Ln-MOF) material can simultaneously demonstrate photoluminescence of lanthanide-(III) cations and organic molecules and endow its superior applications of fluorescence sensing behaviors. Herein, we present a europium(III) MOF material {[Eu 2 (BPTA)•(CH 3 COO) 2 •3DMA]•0.5DMA•3H 2 O} n (1) (where H 4 BPTA is 3,3′,5,5′-biphenyltetracarboxylic acid) for photoluminescence performance of quantitatively sensing the inflammatory marker neopterin (Neo). The obtained 1 comprises Eu 2 (COO) 4 paddlewheel secondary building units, which could be bridged by BPTA 4− ligands to extend a 2D framework. The fluorescence titration indicates 1 can achieve simultaneous fluorescence behavior of Eu 3+ ions and Neo via on−off ratiometric effects and thus could be exploited as the ratiometric fluorescence sensor matrix. Such a fluorescence phenomenon of 1 as a ratiometric sensor for quantitative detection of Neo via an on−off ratiometric effect is never observed in MOF chemistry. Moreover, naked-eye visible color variations of the fluorescence for 1 could be observed from red to blue with increasing concentrations of Neo, confirmed by fluorescent test strips as well as portable fluorescent hydrogels. And 1 also shows a low detection limit of 15.11 nM. A synergetic contribution of the competitive absorption, fluorescence resonance energy-transfer, and photoinduced electron-transfer mechanisms between Neo and the framework of 1 realizes the on−off ratiometric fluorescence behavior for Neo detection, supported by the UV−vis spectral overlap experiment and DFT calculations.

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Section: Introductionmentioning

confidence: 99%

On–Off Ratiometric Fluorescence Europium(III) Metal–Organic Framework for Quantitative Detection of the Inflammatory Marker Neopterin

Hong,

Li,

Zou

et al. 2024

Inorg. Chem.

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“…Organic ligands as energy antennas absorb excitation light energy and transfer it to lanthanide centers to obtain high quantum yields and long fluorescence lifetimes (FLTs). Ln-MOFs have been used to detect explosives, − heavy metal cations, − volatile gases, − organic pollutants, − pesticides, − and so forth. Luminescent Ln-MOFs sensing antibiotics become a research hotspot. − …”

Section: Introductionmentioning

confidence: 99%

A Europium Metal–Organic Framework and Its Polymer Composite Membrane as Switch-Off Fluorescence Sensors for Antibiotic Detection in Lake Water

Xing,

Liu,

Luo

et al. 2023

Inorg. Chem.

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A Pyridazine‐Based Cadmium(II) Organic Framework With pcu Topology as a Luminance Sensor to Nitrobenzene, Al(III), and Cu(II) Ion

Pei‐Pei,

Ting‐Ting,

Meng‐Qi

et al. 2024

Applied Organom Chemis

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In the field of water decontamination, the design of luminance sensor for sensitive detection of heavy metal ion toxic and nitroaromatic compounds are important and challenging. Herein, a new luminescent Cd(II) metal–organic framework (MOF), {[Cd2(H2O)3(4‐CPCA)2]·2H2O}n (SNUT‐27) (H2(4‐CPCA) = 1‐(4‐carboxyphenyl)‐4‐oxo‐1,4‐dihydropyridazine‐3‐carboxylic acid) was obtained by the reaction of flexible ligand H2(4‐CPCA) and Cd(II) ions, characterized by single crystal X‐ray diffraction, PXRD, FT‐IR, and TGA, the samples were further analyzed. The analysis of single crystal X‐ray diffraction showed that SNUT‐27 possesses a distinct three‐dimensional spatial arrangement and demonstrates impressive fluorescence properties. Particularly, SNUT‐27 showed a highly sensitive response to the nitro‐aromatic compounds nitrobenzene by fluorescence quenching, and in contrast, showed a fluorescence enhancement response to Al3+ and Cu2+. SNUT‐27 can be effortlessly recycled by simply rinsing with water post‐sensing experiments, showcasing its reusability. Additionally, potential detection mechanisms have been explored.

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A MOF-on-MOF composite encapsulating sensitized Tb(III) as a built-in self-calibrating fluorescent platform for selective sensing of F ions

Cited by 20 publications

References 45 publications

On–Off Ratiometric Fluorescence Europium(III) Metal–Organic Framework for Quantitative Detection of the Inflammatory Marker Neopterin

On–Off Ratiometric Fluorescence Europium(III) Metal–Organic Framework for Quantitative Detection of the Inflammatory Marker Neopterin

A Europium Metal–Organic Framework and Its Polymer Composite Membrane as Switch-Off Fluorescence Sensors for Antibiotic Detection in Lake Water

A Pyridazine‐Based Cadmium(II) Organic Framework With pcu Topology as a Luminance Sensor to Nitrobenzene, Al(III), and Cu(II) Ion

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