A Eu-MOF-Based Fluorescent Sensing Probe for the Detection of Tryptophan and Cu2+ in Aqueous Solutions

Gong, Yafei; Fu, Yan; Lou, Dawei

doi:10.1007/s10895-024-03633-9

Cited by 4 publications

(2 citation statements)

References 67 publications

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“…The fundamental research on Cu 2+ detection is crucial to environmental monitoring and biological research. Up to now, many detection methods for Cu 2+ have been developed, such as inductively coupled plasma mass spectrometry [2], electrochemical methods [3], surface-enhanced Raman scattering [4], colorimetric and/or fluorescent chemosensors [5][6][7][8][9][10]. In contrast, fluorescence detection has become appealing, due to simple instrumentation, cost-efficiency, fast and high sensitivity [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Novel Rhodamine B Derivative as a “Turn-on” Fluorescent Probe for Cu 2+ with High Selectivity and Sensitivity

Liu,

Zou,

2024

Preprint

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The quantity of “turn-on” probes for Cu2+ is relatively small, and the interference of other metal cations is obvious. In this research, a rhodamine B-based probe, 1-phenyl-3-methyl-5-hydroxypyrazole-4-benzoyl(rhodamine B) hydrazone (RBHP), was synthesized and characterized by 1H NMR, electrospray ionization mass spectrum, elemental analyses, and X-ray single crystal diffraction. Selectivity studies on RBHP to metal cations, and fluorescence and UV–vis absorption spectra titrations of Cu2+ were also conducted. RBHP showed an extremely low fluorescence background signal in acetonitrile and could produce a “turn-on” fluorescent response to Cu2+. While, Na+, K+, Mg2+, Ca2+, Mn2+, Fe2+, Co2+, Ni2+, Zn2+, Cd2+, Cr3+, Al3+ and Fe3+ induced no interference or very weak interference for the detection of Cu2+. RBHP could recognize Cu2+ with a low limit of quantification at 15 µM (~ 0.95 mg/L). RBHP revealed a possibility as a “turn-on” fluorescent probe for Cu2+ with high selectivity and sensitivity.

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Section: Introductionmentioning

confidence: 99%

A Novel Rhodamine B Derivative as a “Turn-on” Fluorescent Probe for Cu 2+ with High Selectivity and Sensitivity

Liu,

Zou,

2024

Preprint

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“…Metal–organic frameworks (MOFs) are a kind of rapidly emerging porous materials self-assembled by metal ions or metal clusters and organic linkers through coordination interactions equipped with numerous fascinating virtues, such as porosity, structural diversity, and modifiability. − On the other hand, rare-earth ions, such as Sm 3+ , Nd 3+ , Er 3+ , and especially Eu 3+ and Tb 3+ , feature the characteristic fluorescent emission, millisecond-class fluorescent lifetime, high quantum yield, etc. − Integrating the advantages of MOFs and rare-earth ions, metal–organic frameworks fabricated with rare-earth ions (Ln-MOFs) have attracted a large amounts of attention toward their potential application in chemical sensors for various ions, − diverse antibiotics, − amino acids, − and different biomarkers. − …”

Section: Introductionmentioning

confidence: 99%

Exploration of the Capacity of a Superstable Eu-MOF for Visualized Identification of 1-HP and Trp in Fresh Human Urine

Liu,

Xu,

Zhang

et al. 2024

Crystal Growth & Design

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1-Hydroxypyrene (1-HP) is known as the end product of polycyclic aromatic hydrocarbons (PAHs). Monitoring the content of 1-hydroxypyrene in human urine or serum can help measure the degree of polycyclic aromatic hydrocarbon poisoning in the human body. Tryptophan (Trp), one of the eight essential amino acids, plays a vital role in human growth and development. Therefore, exploration of a promising sensor for instant and accurate recognition of 1-HP and Trp has a profound influence on human health. Herein, a threedimensional (3D) europium-centered metal−organic framework ([Eu-(H 2 O) 5 ] 0.33 [Eu(obdb)]•2DMF, Eu-MOF) with amazing air stability, acid−base stability, and thermal stability was constructed through the coordination interaction between Eu(III) ions and a V-typed semirigid ligand with two isophthalate groups (H 4 obdb, 4′,4‴-oxybis([1,1′biphenyl]-3,5-dicarboxylic acid)) under a solvothermal condition. As expected, Eu-MOF can recognize 1-HP and Trp in binary solutions of DMF-H 2 O based on a significantly luminescent turn-off effect with high quenching efficiencies (99.2% for 1-HP and 93.8% for Trp), charming quenching constants (2.15 × 10 4 M −1 for 1-HP and 4.88 × 10 4 M −1 for Trp), low limit of detection (1.10 μM for 1-HP and 0.73 μM for Trp), and satisfactory antijamming capability. In addition, for detection of 1-HP or Trp, the color change of Eu-MOF from red to blue is visible to the naked eye as the concentration of 1-HP or Trp increases under a 365 nm UV lamp. Moreover, except in DMF-H 2 O solutions, the sensing capacities of Eu-MOF toward 1-HP and Trp are proven to be comparable in HEPES buffer solution and real samples.

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A Terbium Ion-Based Dual-Ligand Fluorescent Probe for Highly Selective and Sensitive Detection of Cu2+ Ions

Han,

Shi,

Teng

et al. 2024

J Fluoresc

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A Eu-MOF-Based Fluorescent Sensing Probe for the Detection of Tryptophan and Cu2+ in Aqueous Solutions

Cited by 4 publications

References 67 publications

A Novel Rhodamine B Derivative as a “Turn-on” Fluorescent Probe for Cu 2+ with High Selectivity and Sensitivity

A Novel Rhodamine B Derivative as a “Turn-on” Fluorescent Probe for Cu 2+ with High Selectivity and Sensitivity

Exploration of the Capacity of a Superstable Eu-MOF for Visualized Identification of 1-HP and Trp in Fresh Human Urine

A Terbium Ion-Based Dual-Ligand Fluorescent Probe for Highly Selective and Sensitive Detection of Cu2+ Ions

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