A recyclable bipyridine-containing covalent organic framework-based QCM sensor for detection of Hg(II) ion in aqueous solution

Li, Dian-Mei; Liu, Shuqing; Huang, Jiayi; Yan, Yilun; Zhang, Shuyuan; Tang, Xihao; Fan, Jun; Zheng, Sheng‐Run; Zhang, Weiguang; Cai, Song‐Liang

doi:10.1016/j.jssc.2021.122421

Cited by 25 publications

(12 citation statements)

References 44 publications

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“…The binding energies of Cu 2p in Cu-BTA-COF (Figure b) were 954.55 eV (Cu 2p 1/2 ) and 934.67 eV (Cu 2p 3/2 ), a little blue shift compared to that in CuCl 2 ·2H 2 O (Figure S3a), demonstrating that Cu remained bivalent in Cu-BTA-COF. The XPS spectra of N 1s in Cu-BTA-COF (Figure c) can be divided into three peaks, which were 400.36 eV (N–CO), 399.57 eV (NC), and 399.08 eV (pyridine N). , The binding energies of O 1s in Cu-BTA-COF were 532.81 and 531.09 eV. Compared with the peak positions of the N 1s region and O 1s region in BTA-COF (Figure S3b-c), these peaks in Cu-BTA-COF were all slightly red-shifted, proving the coordination effect between Cu 2+ and BTA-COF.…”

Section: Resultsmentioning

confidence: 93%

“…BTA-COF was synthesized by modifying the previously reported method. 39 Benzene-1,3,5tricarbohydrazide (BTH) (5.00 mg, 0.02 mmol), 2,2′bipyridine-5,5′-dicarbaldehyde (BPA) (6.4 mg, 0.03 mmol), 0.9 mL of mesitylene, and 0.1 mL of 1,4-dioxane were put into a tube and sonicated to get well dispersed. Then, 0.2 mL of acetic acid solution (6 M) was added into the tube.…”

Section: ■ Introductionmentioning

confidence: 99%

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Fluorescence/Colorimetry/Smartphone Triple-Mode Sensing of Dopamine by a COF-Based Peroxidase-Mimic Platform

et al. 2022

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Simple and accurate monitoring of urinary dopamine (DA) concentration is significant, which is helpful for the assessment or exclusion of catecholamine-producing tumors, such as pheochromocytoma and paraganglioma. Herein, a fluorescence/ colorimetry/smartphone triple-mode sensing platform for DA determination was constructed using copper ion (Cu 2+ )-modified hydrazone-linked covalent organic frameworks (Cu-BTA-COF). Cu-BTA-COF with 21.67 wt % copper content exhibited peroxidase-mimic activity. After adding H 2 O 2 and 1,3-dihydroxynaphthalene, the Cu-BTA-COF platform can sensitively and selectively detect DA in three modes with consistent results. In fluorescence/colorimetry/smartphone modes, the linear ranges of DA were 1−10, 0.2−40, and 1−10 μM, with related detection limits of 7.2, 8.6, and 23 nM, respectively. Moreover, the Cu-BTA-COF platform can be explored for DA determination in human urine samples with satisfactory recoveries (97.6−100.4%) in all the three modes, suggesting the potential practical application of the Cu-BTA-COF platform for DA detection in urine.

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Section: Resultsmentioning

confidence: 93%

Section: ■ Introductionmentioning

confidence: 99%

Fluorescence/Colorimetry/Smartphone Triple-Mode Sensing of Dopamine by a COF-Based Peroxidase-Mimic Platform

et al. 2022

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“…The pore size and specific surface area of both materials were found to be smaller than the theoretical values. This could be attributed to the production of a high number of small molecule polymers during the preparation of COFs, which in turn block the pore channels …”

Section: Resultsmentioning

confidence: 99%

Design, Preparation, and High Intrinsic Proton Conductivity of Two Highly Stable Hydrazone-Linked Covalent Organic Frameworks

Zhang

Guo

et al. 2023

ACS Appl. Mater. Interfaces

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Assembling crystalline materials with high stability and high proton conductivity as a potential alternative to the Nafion membrane is a challenging topic in the field of energy materials. Herein, we concentrated on the creation and preparation of hydrazone-linked COFs with super-high stability to explore their proton conduction. Fortunately, two hydrazone-linked COFs, TpBth and TaBth, were solvothermally prepared by using benzene-1,3,5-tricarbohydrazide (Bth), 2,4,6-trihydroxy-benzene-1,3,5tricarbaldehyde (Tp), and 2,4,6-tris(4-formylphenyl)-1,3,5-triazine (Ta) as monomers. Their structures were simulated by Material Studio 8.0 software and confirmed by the PXRD pattern, demonstrating a two-dimensional framework with AA packing. The presence of a large number of carbonyl groups as well as −NH−NH 2 − groups on the backbone is responsible for their super-high water stability as well as high water absorption capacity. AC impedance tests demonstrated a positive correlation between the waterassisted proton conductivity (σ) of the two COFs and the temperature and humidity. Under 100 °C/98% RH, the highest σ values of TpBth and TaBth can reach 2.11 × 10 −4 and 0.62 × 10 −5 S•cm −1 , which are among the high σ values of the reported COFs. Their proton-conductive mechanisms were highlighted by structural analyses as well as N 2 and H 2 O vapor adsorption data and activation energy values. Our systematic research affords ideas for the synthesis of proton-conducting COFs with high σ values.

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“…To examine the potential of as-synthesized lanthanide(III)-modified MIL-125(Ti) samples as fluorogenic sensors, the fluorescence spectra of MIL-125(Ti-Eu)/MIL-125(Ti-Tb) suspension were studied in a series of common solvents (Figure S7). The fluorescence response of MIL-125(Ti-Eu)/MIL-125(Ti-Tb) suspension toward a series of cationic species, including Ag + , Ba 2+ , Cd 2+ , Co 2+ , Mn 2+ , Cr 3+ , Cu 2+ , Mg 2+ , Ni 2+ , Pb 2+ , Al 3+ , Fe 3+ , and Zn 2+ , − was performed in DMF owing to the strongest fluorescence intensity. As shown in Figure a,b, the fluorescence quenching of MIL-125(Ti-Eu) was discernible to a great extent with Cu(II) and Fe(III) ions.…”

Section: Resultsmentioning

confidence: 99%

Lanthanide(III)-Modified MIL-125(Ti-Ln) (Ln = Eu or Tb) for the Detection of Cu(II) and Fe(III) Ions

Yang

et al. 2022

Crystal Growth & Design

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Heavy metal pollution has become a worldwide concern of environmental problems. The replacement of partial Ti(IV) centers with Eu(III) or Tb(III) yielded a couple of lanthanide(III)-modified MIL-125(Ti) materials, MIL-125(Ti-Ln) [Ln = Eu(III) or Tb(III)]. MIL-125(Ti-Ln) series were explored as fluorescent probes toward a series of metal ions based on the fluorescence properties of lanthanide(III) centers. Heterometallic MIL-125(Ti-Ln) series exhibited highly selective fluorescence quenching responses toward Cu(II) and Fe(III) ions. Moreover, the possible mechanism of fluorescence quenching was also studied.

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A recyclable bipyridine-containing covalent organic framework-based QCM sensor for detection of Hg(II) ion in aqueous solution

Cited by 25 publications

References 44 publications

Fluorescence/Colorimetry/Smartphone Triple-Mode Sensing of Dopamine by a COF-Based Peroxidase-Mimic Platform

Fluorescence/Colorimetry/Smartphone Triple-Mode Sensing of Dopamine by a COF-Based Peroxidase-Mimic Platform

Design, Preparation, and High Intrinsic Proton Conductivity of Two Highly Stable Hydrazone-Linked Covalent Organic Frameworks

Lanthanide(III)-Modified MIL-125(Ti-Ln) (Ln = Eu or Tb) for the Detection of Cu(II) and Fe(III) Ions

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