Design of “turn-on” fluorescence sensor for L-Cysteine based on the instability of metal-organic frameworks

Zhao, Xudong; Zhang, Yuezhong; Han, Jiamei; Jing, Huijuan; Gao, Zhu-Qing; Huang, Hongliang; Wang, Yuanyang; Zhong, Chongli

doi:10.1016/j.micromeso.2018.04.019

Cited by 42 publications

(12 citation statements)

References 40 publications

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“…As an fcu -topology MOF, UiO-66-(COOH) 2 owns the typical cage-window structure. The window size of this Zr-MOF is only ∼4.6 Å, far less than the size of the RhB molecule (15.6 Å × 13.5 Å) . In addition, the BET specific surface area and the pore volume of the sample after adsorption were measured to be 308 m 2 g –1 and 0.44 cm 3 g –1 respectively (Figure S11), still comparable with the values of the original sample.…”

Section: Resultssupporting

confidence: 53%

Ultra-High-Capacity Adsorption of Rhodamine B in a Carboxyl-Functionalized Metal–Organic Framework via Surface Adsorption

et al. 2020

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The adsorption of rhodamine B (RhB) from aqueous solution on a functionalized metal–organic framework UiO-66-(COOH)2 was studied systematically in view of the adsorption isotherm, kinetics, thermodynamics, effect of pH and co-existing salts, and regeneration of the material. The adsorption behavior of RhB on UiO-66-(COOH)2 followed the Langmuir isotherm model and pseudo-second-order model. The thermodynamics study indicates that the adsorption of RhB is mainly controlled by the entropy effect rather than the enthalpy change. The strong electrostatic interaction as well as H-bond interaction contributes to the capture of RhB on the nanoscale UiO-66-(COOH)2 via the surface adsorption manner. UiO-66-(COOH)2 exhibited an ultra-high adsorption capacity of 2200 mg g–1 and excellent continuous removal ability. The high adsorption capacity, strong anti-interference ability, and easy regeneration make UiO-66-(COOH)2 as an ideal adsorbent for RhB removal from aqueous solution.

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Section: Resultssupporting

confidence: 53%

Ultra-High-Capacity Adsorption of Rhodamine B in a Carboxyl-Functionalized Metal–Organic Framework via Surface Adsorption

et al. 2020

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“…[ 8‐10 ] Recently, exploiting MOF sensors by taking advantage of the reversibility and instability in certain conditions of coordination bonds has become a research hotspot. [ 11‐14 ] For phosphate sensing, one of the current strategies is to utilize the coordination effect between phosphate and inorganic clusters to control the luminescence of MOFs, and the distinct binding of central metals towards phosphate is the dominant reason for the high selectivity. Up to date, such MOF‐based sensors have been reported, for example, UiO‐66‐NH 2 and other Eu/Tb‐based MOFs.…”

Section: Background and Originality Contentmentioning

confidence: 99%

Monodentate AIEgen Anchored on Metal‐Organic Framework for Fast Fluorescence Sensing of Phosphate

et al. 2020

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Metal-organic frameworks | Fluorescent probes | Phosphate | Monodentate ligand | AIEgen Herein, a novel sensor (TPE-UiO-66) was designed via anchoring monodentate tetraphenylethylene (TPE) onto UiO-66 framework. The combination of the distinct aggregation-induced emission (AIE) of TPE and the easy replacement of monodentate linker by guest phosphate, makes TPE-UiO-66 an ideal platform for sensing HPO 4 2-. Experimental results indicate that TPE-UiO-66 can selectively sense HPO 4 2from other common anions. The limit of detection (LOD) can reach to 5.56 μmol•L-1 and more importantly, TPE-UiO-66 also exhibits an ultra-fast equilibrium response of 2 min, far faster than those of other sensors especially for UiO-66-NH 2. The combination of experimental analysis and density functional theory (DFT) calculations demonstrates that the high selectivity, high sensitivity and fast response of HPO 4 2detection by TPE-UiO-66 can be attributed to the stronger coordination interactions of HPO 4 2with Zr-O cluster of UiO-66 than that of TPE molecule. This study not only provides a potential probe for phosphate, but also represents a novel strategy to design stimuli-responsive fluorescent MOF-based sensors via using monodentate AIEgens.

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“…With the in-situ encapsulation of rhodamine B (RhB) into Cu-BTC, Gao and Huang et al reported a turn-on fluorescent assay (RhB@Cu-BTC MOFs) for sensing Cys [102]. The fluorescence of RhB@Cu-BTC was very weak because the embedded RhB was adjacent to the paramagnetic copper center.…”

Section: Mof-based Luminescent Chemodosimeters For Sulfur Compoundsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Recent Progress in Metal–Organic Framework (MOF) Based Luminescent Chemodosimeters

et al. 2019

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Metal–organic frameworks (MOFs), as a class of crystalline hybrid architectures, consist of metal ions and organic ligands and have displayed great potential in luminescent sensing applications due to their tunable structures and unique photophysical properties. Until now, many studies have been reported on the development of MOF-based luminescent sensors, which can be classified into two major categories: MOF chemosensors based on reversible host–guest interactions and MOF chemodosimeters based on the irreversible reactions between targets with a probe. In this review, we summarize the recently developed luminescent MOF-based chemodosimeters for various analytes, including H2S, HClO, biothiols, fluoride ions, redox-active biomolecules, Hg2+, and CN−. In addition, some remaining challenges and future perspectives in this area are also discussed.

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Design of “turn-on” fluorescence sensor for L-Cysteine based on the instability of metal-organic frameworks

Cited by 42 publications

References 40 publications

Ultra-High-Capacity Adsorption of Rhodamine B in a Carboxyl-Functionalized Metal–Organic Framework via Surface Adsorption

Ultra-High-Capacity Adsorption of Rhodamine B in a Carboxyl-Functionalized Metal–Organic Framework via Surface Adsorption

Monodentate AIEgen Anchored on Metal‐Organic Framework for Fast Fluorescence Sensing of Phosphate

Recent Progress in Metal–Organic Framework (MOF) Based Luminescent Chemodosimeters

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