Combination of covalent organic frameworks (COFs) and polyoxometalates (POMs): the preparation strategy and potential application of COF–POM hybrids

Xue, Rui; Liu, Yinsheng; Wang, Mingyue; Guo, Hao; Yang, Wu; Yang, Guo‐Yu

doi:10.1039/d3mh00906h

Cited by 9 publications

(2 citation statements)

References 134 publications

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“…The applications of POMs not only are any longer focused on catalytic, magnetic, and luminescence but also have been extended toward the explorations of enzyme-like activity, electrochemical sensing, etc. − Although POMs with remarkable redox activity have been proven to be potential electrode materials, their application in electrochemical sensors is greatly restricted owing to the shortcomings of poor conductivity. Therefore, some multifunctional composite materials, which combined POMs with metal nanoparticles (NPs), metal–organic frameworks, covalent–organic frameworks, carbonaceous materials, and conducting polymers, were fabricated to take advantage of synergistic effects to improve conductive properties. − The results indicate that the electrochemical sensors of carbon–POM nanomaterials can exhibit a low detection limit, high selectivity, and good antijamming capability. Therefore, the research studies on the electrochemical sensors of POM-based composites have made some vigorous development in the past decade .…”

Section: Resultsmentioning

confidence: 99%

2,5-Thiophenedicarboxylic Acid Bridging Hexameric Ce^III-Substituted Selenotungstate and Its Application for Detecting Mucin 1

Liu,

Zeng

et al. 2024

Inorg. Chem.

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The development of polyoxometalate chemistry not only is derived from the continuous discovery of novel polyoxometalates (POMs) but also stems from the exploitation of their new functionalities. In this work, we obtained a rigid sulfur-containing heterocyclic ligand-linking aggregate [N(CH3)4]10Na6H6[Ce8(H2O)26W8(HTDA)2(TDA)2O20][SeW4O18]2[SeW9O33]4·112H2O (1) (H2TDA = 2,5-thiophenedicarboxylic acid). Its polyanionic unit consists of one [Ce4(H2O)13W4O10(HTDA)(TDA)O10]18+ cluster and two kinds of Keggin-type [SeW4O18] and [SeW9O33] segments. It is noteworthy that H2TDA ligands not only work as connectors to link two symmetrical {[Ce4(H2O)13W4(HTDA)(TDA)O10][SeW4O18][SeW9O33]2}11– units but also function as ornaments to graft to the polyanionic backbone. Furthermore, 1 and 3,4-ethylenedioxythiophene (EDOT) were deposited on the glassy carbon electrode (GCE) by the electropolymerization (EPM) method, resulting in a 1-poly(3,4-ethylenedioxythiophene) (1-PEDOT) composite film, which can provide sufficient binding sites to immobilize Au nanoparticles (Au NPs). Hereafter, the Au NPs-immobilized 1-PEDOT modified electrode (Au/1-PEDOT/GCE) was used to construct an electrochemical aptasensor to detect mucin 1, showing a low detection limit of 29.5 fM in the Tris solution. This work not only demonstrates that rigid heterocyclic ligands are beneficial for the creation of novel rare-earth-substituted selenotungstate hybrids but also provides more enlightenment for POM-based materials used for electrochemical detection of cancer markers.

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Section: Resultsmentioning

confidence: 99%

2,5-Thiophenedicarboxylic Acid Bridging Hexameric Ce^III-Substituted Selenotungstate and Its Application for Detecting Mucin 1

Liu,

Zeng

et al. 2024

Inorg. Chem.

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“…POMs have been used together with surfactants as a precursor to prepare materials with hollow morphologies . The introduction of POMs into the structure of MOFs generates polyoxometalate-based MOF materials (POMOFs). − POMOFs − act as precursors, providing a rich metal source, and the POMs are uniformly distributed in the framework to provide morphology modification. Thus, POMOFs are good candidates to be used as precursors and templates for the one-step preparation of hollow pure-phase CoS 2 .…”

Section: Introductionmentioning

confidence: 99%

One-Step Synthesis of Hollow CoS₂ Spheres Derived from Polyoxometalate-Based Metal–Organic Frameworks with Peroxidase-like Activity

Xin,

Pang,

Gómez-García

et al. 2023

Inorg. Chem.

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In this work, hollow CoS 2 particles were prepared by a one-step sulfurization strategy using polyoxometalate-based metal−organic frameworks as the precursor. The morphology and structure of CoS 2 have been monitored by scanning electron microscopy, X-ray photoelectron spectroscopy, and X-ray powder diffraction. The mechanism for the formation of CoS 2 is discussed. The reaction time and sulfur content are found to be important factors that affect the morphology and pure phase formation of CoS 2 , and a hollow semioctahedral morphology of CoS 2 with open voids was obtained when the sulfur source was twice as large as the precursor and the reaction time was 24 h. The CoS 2 (24 h) particles show an excellent peroxidase-like activity for the oxidation of colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxidized (oxTMB) by hydrogen peroxide. The polyoxometalate used as a precursor helps to stabilize oxTMB during catalytic oxidation, forming a stable curve platform for at least 8 min. Additionally, the colorimetric detection of hydroquinone is developed with a low detection limit of 0.42 μM. This research provides a new strategy to design hollow materials with high peroxidase-mimicking activity.

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Synthesis, Characterization, and Application of a Polyoxometalates‐Based Cu^II Complex for Efficient Catalytic Oxidation and Electrochemical Detection

Liu,

Li,

Zhang

et al. 2024

Cryst. Res. Technol.

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The development of eco‐friendly, high‐efficiency polyoxometalates (POMs) catalysts is vital for advancing catalytic oxidation and electrochemical detection in environmental protection. Herein, a POM‐based CuII‐containing complex with the molecular formula [H(4‐AP)]8[Cu2(H2O)4(P2Mo5O23)2]·8H2O (1) (4‐AP = 4‐aminopyridine) is synthesized using the hydrothermal method, and the crystal structure is determined by single X‐ray diffraction (SXRD), infrared (IR) spectroscopy, and powder X‐ray diffraction (PXRD). Structurally, complex 1 exhibits a one dimension (1D) chain arrangement, composed of CuII ions and Strandberg‐type (P2Mo5O23)6− anionic clusters. These 1D chains are further interconnected through [H(4‐AP)]+ ligands, resulting in the formation of a two dimension (2D) supramolecular network. Complex 1 serves as an outstanding heterogeneous catalyst for the oxidation of methyl phenyl sulfide (MPS), demonstrating a remarkable conversion rate of 99% for MPS and a selectivity of 98% toward methyl phenyl sulfoxide (MPSO). In addition to its catalytic capabilities, complex 1 is also employed in the electrochemical detection of FeIII and CrVI ions, with low limits of detection (LODs) at 4.92 µm for FeIII and 7.82 µM for CrVI.

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Combination of covalent organic frameworks (COFs) and polyoxometalates (POMs): the preparation strategy and potential application of COF–POM hybrids

Abstract: Both covalent organic frameworks (COFs) and polyoxometalates (POMs) show excellent properties and application potential in many fields, thus receiving widespread attention. In recent years, the COFs-POMs hybrid materials were prepared...

Cited by 9 publications

References 134 publications

2,5-Thiophenedicarboxylic Acid Bridging Hexameric Ce^III-Substituted Selenotungstate and Its Application for Detecting Mucin 1

2,5-Thiophenedicarboxylic Acid Bridging Hexameric Ce^III-Substituted Selenotungstate and Its Application for Detecting Mucin 1

One-Step Synthesis of Hollow CoS₂ Spheres Derived from Polyoxometalate-Based Metal–Organic Frameworks with Peroxidase-like Activity

Synthesis, Characterization, and Application of a Polyoxometalates‐Based Cu^II Complex for Efficient Catalytic Oxidation and Electrochemical Detection

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Combination of covalent organic frameworks (COFs) and polyoxometalates (POMs): the preparation strategy and potential application of COF–POM hybrids

Abstract: Both covalent organic frameworks (COFs) and polyoxometalates (POMs) show excellent properties and application potential in many fields, thus receiving widespread attention. In recent years, the COFs-POMs hybrid materials were prepared...

Cited by 9 publications

References 134 publications

2,5-Thiophenedicarboxylic Acid Bridging Hexameric CeIII-Substituted Selenotungstate and Its Application for Detecting Mucin 1

2,5-Thiophenedicarboxylic Acid Bridging Hexameric CeIII-Substituted Selenotungstate and Its Application for Detecting Mucin 1

One-Step Synthesis of Hollow CoS2 Spheres Derived from Polyoxometalate-Based Metal–Organic Frameworks with Peroxidase-like Activity

Synthesis, Characterization, and Application of a Polyoxometalates‐Based CuII Complex for Efficient Catalytic Oxidation and Electrochemical Detection

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2,5-Thiophenedicarboxylic Acid Bridging Hexameric Ce^III-Substituted Selenotungstate and Its Application for Detecting Mucin 1

2,5-Thiophenedicarboxylic Acid Bridging Hexameric Ce^III-Substituted Selenotungstate and Its Application for Detecting Mucin 1

One-Step Synthesis of Hollow CoS₂ Spheres Derived from Polyoxometalate-Based Metal–Organic Frameworks with Peroxidase-like Activity

Synthesis, Characterization, and Application of a Polyoxometalates‐Based Cu^II Complex for Efficient Catalytic Oxidation and Electrochemical Detection