Flumequine-mediated fluorescent zeolitic imidazolate framework functionalized by Eu3+ for sensitive and selective detection of UO22+, Ni2+ and Cu2+ in nuclear wastewater

Mei, Douchao; Yan, Bing

doi:10.1016/j.jhazmat.2023.130822

Cited by 22 publications

(6 citation statements)

References 78 publications

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“…In order to enhance the assessment of the detection efficacy of CuMOF in sensing of 3-NT, the plot for I 0 /I of CuMOF suspensions versus 3-NT concentrations was presented in Figure 5c, and the Stern-Volumer equation of I 0 /I = 19,480[3-NT] + 0.9803 (K sv = 1.94 Â 10 4 M À1 , R 2 = 0.9808) was calculated by using data from a low concentration range. 36,38,[46][47][48][49] According to LOD = 3σ/K sv (here σ represents the standard deviation calculated for a set of 10 blank samples), the detection limits (LOD) were found 0.49 μM (110.8 ng/ml), similar to other reported ones [50][51][52] (Table 1). Besides, the time-dependent luminescence intensity of CuMOF suspensions indicated the response time as low as 25 seconds (Figure S8).…”

Section: Detectability Toward 3-nt Biomarkersupporting

confidence: 70%

A dual‐responsive luminescent sensor for efficient detection of 3‐nitrotyrosine and dipicolinic acid biomarkers based on copper(II) organic framework

Li,

Liu

et al. 2024

Applied Organom Chemis

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The trace detection of biomarkers in real samples has profound a most important significance in the early diagnosis and daily monitoring of diseases. Based on the ligand pre‐design strategy, a novel 3D CuMOF, with the formula of {[Cu4(BTPB)(μ2‐OH)2(H2O)5]·3H2O}n, was fabricated by using the hexacarboxyl ligand of 1,4‐bis(2,4,6‐tricarboxylpyrid‐5‐yl)benzene (H6BTPB) and tetranuclear {Cu4(COO)4(μ2‐OH)2} SBUs. Benefiting from the robust framework and unique luminescence performance, the prepared CuMOF displays great potential as a dual‐responsive efficient luminescent sensor in “turn‐off” detection of 3‐nitrotyrosine (3‐NT) biomarker and “turn‐on” detecting the anthrax biomarker of dipicolinic acid (DPA), with detection limits (LOD) for 3‐NT and DPA being 110.8 ng/ml and 85.2 ng/ml, respectively. Additionally, the practicality and compatibility of such developed sensors were verified by quantifying 3‐NT and DPA biomarkers in diluted serum and urine samples with satisfactory recoveries. Further, the theoretical calculations of energy levels as well as the spectral overlap between the analytes and CuMOF were conducted to elucidate the possible sensing mechanisms. This work demonstrated that MOFs‐based luminescent sensors are evolving as an efficacious and equable approach for the detection of biomarkers in real samples.

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Section: Detectability Toward 3-nt Biomarkersupporting

confidence: 70%

A dual‐responsive luminescent sensor for efficient detection of 3‐nitrotyrosine and dipicolinic acid biomarkers based on copper(II) organic framework

Li,

Liu

et al. 2024

Applied Organom Chemis

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“…The GGA-PBE functional and DNP4.4 basis sets were used for the calculations. In the current study, the convergence criterion of the electronic self-consistent field (SCF) loop was set to be 10 –6 with energy 10 –5 Ha, force constant 0.002 Ha/Å, displacement 0.005 Å, and value of smearing 0.05 Ha 27 , 28 . Considering that the metal ions might interact with the carboxyl groups in the organic ligands, H 2 BPDC and RhB, to simplify the computational process, the optimized structure considered only a single carboxyl group and a metal ion on the ligand.…”

Section: Methodsmentioning

confidence: 99%

A dual-responsive RhB-doped MOF probe for simultaneous recognition of Cu2+ and Fe3+

Zhang,

Cao,

et al. 2024

Sci Rep

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Based on the dual response of RhB@UiO-67 (1:6) to Cu2+ and Fe3+, a proportional fluorescent probe with (I392/I581) as the output signal was developed to recognize Cu2+ and Fe3+. Developing highly sensitive and selective trace metal ions probes is crucial to human health and ecological sustainability. In this work, a series of ratio fluorescent probes (RhB@UiO-67) were successfully synthesized using a one-pot method to enable fluorescence sensing of Cu2+ and Fe3+ at low concentrations. The proportional fluorescent probe RhB@UiO-67 (1:6) exhibited simultaneous quenching of Cu2+ and Fe3+, which was found to be of interest. Furthermore, the limits of detection (LODs) for Cu2+ and Fe3+ were determined to be 2.76 μM and 0.76 μM, respectively, for RhB@UiO-67 (1:6). These values were significantly superior to those reported for previous sensors, indicating the probe’s effectiveness in detecting Cu2+ and Fe3+ in an ethanol medium. Additionally, RhB@UiO-67 (1:6) demonstrated exceptional immunity and reproducibility towards Cu2+ and Fe3+. The observed fluorescence quenching of Cu2+ and Fe3+ was primarily attributed to the mechanisms of fluorescence resonance energy transfer (FRET), photoinduced electron transfer (PET), and competitive absorption (CA). This work establishes a valuable foundation for the future study and utilization of Cu2+ and Fe3+ sensing technologies.

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“…Moreover, the inevitable sample pretreatment prior to instrumental analysis, such as filtration and digestion, also imparts threats on the operators’ health, owing to the possible radioactivity of the samples. On the other hand, photoluminescent detection methods have received considerable attention for the analysis of UO 2 2+ owing to the opration simplicity and safety, and the low cost as well. ,− Among them, lanthanide metal–organic frameworks (Ln-MOFs) with adjustable ordered porous structures for introducing abundant binding sites, as well as large Stokes shifts for avoiding spectral cross-talk, offered invaluable opportunities for constructing fluorescence probes for UO 2 2+ . ,− …”

Section: Introductionmentioning

confidence: 99%

On-Site Ratiometric Analysis of UO₂²⁺ with High Selectivity

Tong,

Yu,

Gong

et al. 2024

Anal. Chem.

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Uranyl ions (UO 2 2+ ) are recognized as important indicators for monitoring sudden nuclear accidents. However, the interferences coexisting in the complicated environmental matrices impart serious constraints on the reliability of current on-site monitoring methods. Herein, a novel ratiometric method for the highly sensitive and selective detection of UO 2 2+ is reported based on a [Eu-(diaminoterephthalic acid)] (Eu-DATP) metal−organic framework. Benefiting from the unique chemical structure of Eu-DATP, energy transfer from DATP to UO 2 2+ was enabled, resulting in the up-regulated fluorescence of UO 2 2+ and the simultaneous down-regulated fluorescence of Eu 3+ . The limit of detection reached as low as 2.7 nM, which was almost 2 orders of magnitude below the restricted limit in drinking water set by the United States Environmental Protection Agency (130 nM). The Eu-DATP probe showed excellent specificity to UO 2 2+ over numerous interfering species, as the intrinsic emissions of UO 2 2+ were triggered. This unprecedentedly high selectivity is especially beneficial for monitoring UO 2 2+ in complicated environmental matrices with no need for tedious sample pretreatment, such as filtration and digestion. Then, by facilely equipping a Eu-DATP-based sampler on a drone, remotely controlled sampling and on-site analysis in real water samples were realized. The concentrations of UO 2 2+ were determined to be from 16.5 to 23.5 nM in the river water of the Guangzhou downtown area, which was consistent with the results determined by the gold-standard inductively coupled plasma mass spectrometry. This study presents a reliable and convenient method for the on-site analysis of UO 2 2+ .

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Flumequine-mediated fluorescent zeolitic imidazolate framework functionalized by Eu3+ for sensitive and selective detection of UO22+, Ni2+ and Cu2+ in nuclear wastewater

Cited by 22 publications

References 78 publications

A dual‐responsive luminescent sensor for efficient detection of 3‐nitrotyrosine and dipicolinic acid biomarkers based on copper(II) organic framework

A dual‐responsive luminescent sensor for efficient detection of 3‐nitrotyrosine and dipicolinic acid biomarkers based on copper(II) organic framework

A dual-responsive RhB-doped MOF probe for simultaneous recognition of Cu2+ and Fe3+

On-Site Ratiometric Analysis of UO₂²⁺ with High Selectivity

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Flumequine-mediated fluorescent zeolitic imidazolate framework functionalized by Eu3+ for sensitive and selective detection of UO22+, Ni2+ and Cu2+ in nuclear wastewater

Cited by 22 publications

References 78 publications

A dual‐responsive luminescent sensor for efficient detection of 3‐nitrotyrosine and dipicolinic acid biomarkers based on copper(II) organic framework

A dual‐responsive luminescent sensor for efficient detection of 3‐nitrotyrosine and dipicolinic acid biomarkers based on copper(II) organic framework

A dual-responsive RhB-doped MOF probe for simultaneous recognition of Cu2+ and Fe3+

On-Site Ratiometric Analysis of UO22+ with High Selectivity

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On-Site Ratiometric Analysis of UO₂²⁺ with High Selectivity