A 3D supramolecular framework with electron-deficient-carboxylate-functionalized [γ-Mo8O26]-subunits for catalytic epoxidation of alkenes and electrochemical detection of sunset yellow

Journal of Molecular Structure, Год журнала: 2025, Номер unknown, С. 142176 - 142176

Опубликована: Март 1, 2025

Язык: Английский

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Kinetically Controlled Self-Assembly of Ag Nanoclusters with Enhanced Luminescence

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(30), С. 39847 - 39856

Опубликована: Июль 18, 2024

Constructing self-assembly with definite assembly structure-property correlation is of great significance for expanding the property richness and functional diversity metal nanoclusters (NCs). Herein, a well-designed liquid reaction strategy was developed through which highly ordered nanofiber superstructure enhanced green photoluminescence (PL) obtained via individual silver (Ag NCs). By visual monitoring kinetic process using time-dependent in situ spectroscopy measurements, assembling structure growth structure-determined luminescence mechanisms were revealed. The as-prepared nanofibers featured series advantages involving high emission efficiency, large Stokes shift, homogeneous chromophore, excellent photostability, temperature, pH sensibility. virtue these merits, they successfully employed various fields luminescent inks, encryption anticounterfeiting platforms, optoelectronic light-emitting diode (LED) devices.

Язык: Английский

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Experimental and Theoretical Study of Two 3D Difunctional Electrocatalytic Hybrid Vanadate-Containing Metal–Organic Motifs

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 29, 2025

Two novel 3D inorganic-organic hybrids based on [V6O18]6-/[V3O9]3- clusters, [Cu18(bbpy)18(V6O18)6]·3H2O (1) and [Cu4Ag4(pty)4(V3O9)4]·H2O (2) (bbpy = 3,5-bis(1-benzimidazole) pyridine, pty 4'-(4″-pyridyl)-2,2':6',2″-terpyridine), were isolated in the same POV/Cu/N-heterocycle ligand reaction systems. Hybrids 1 2 possess three-dimensional bimetallic frameworks derived from clusters Cu-organic complexes. In 1, bbpy ligands are grafted by Cu2+ to a grid ribbon 2D sheet, which connected with benzene-like [V6O18]6- yield framework. 2, helical {O-V-O-V-}n chains bridged Cu(II) ions into layer including eight-membered rings {V6Cu2} six-membered {V4Cu2}, adjoining sheets joined Ag-N coordination bonds form framework structure. Moreover, hybrid has superior electrocatalytic properties for nitrite reduction oxidation of ascorbic acid efficiencies 397.2 96%, respectively. Hybrid displays coordinated performance toward through V Cu centers. Meanwhile, corresponding theoretical studies conducted evaluate active sites charge distribution.

Язык: Английский

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Bisphosphonate-modified Boat-shaped Polyoxoniobates for Efficient Catalysis of Knoevenagel Condensation

Journal of Solid State Chemistry, Год журнала: 2025, Номер unknown, С. 125304 - 125304

Опубликована: Март 1, 2025

Язык: Английский

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Lanthanide-Incorporated P^III–Sb^III-Heteroatom-Templated Tetrahedral Heteropolyoxometalate Cluster for Detecting Early Tumor Marker MicroRNA-155

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Heteropolyoxometalates have garnered widespread attention owing to their diverse structures and intriguing physicochemical properties. Herein, we successfully synthesized a unique lanthanide-incorporated PIII–SbIII-heteroatom-templated tetrahedral polyoxometalate cluster [H2N(CH3)2]20Na7H7{[Er6(H2O)6][W4O16][HPSbW15O54]4}·132H2O (1). The polyoxoanion of 1 can be perceived as four trilacunary Dawson [HPSbW15O54]11– {PSbW15} building blocks encapsulating deca-nuclear heterometallic [Er6(H2O)6W4O16]10+ cluster. This comprises an inner [W4O16]8– ({W4}) core surrounded by octahedral [Er6(H2O)6]18+ ({Er6}) shell. Consequently, the exhibits distinctive ({W4} ⊂ {Er6} [{PSbW15}]4) three-shell structure. Considering electron transfer characteristics 1, it was coelectropolymerized with N-methylpyrrole (NMPy) fabricate 1–PNMPy film (PNMPy = polyNMPy). Notably, incorporation improves distribution within PNMPy backbone, thereby narrowing band gap enhancing conductive performance film. Therefore, is utilized modified electrode material construct electrochemical biosensor for sensitive detection tumor marker microRNA-155. research not only provides viable approach fabrication multishell heteropolyoxometalates but also promotes exploration application multicomposition polyoxometalates in biosensing microRNA.

Язык: Английский

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Engineering geometric metamorphosis in {P₆M₂Mo₁₆O₇₃}-based high-nuclearity metal superclusters: from tetrahedral to square assemblies via topological transformations

Inorganic Chemistry Frontiers, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The precision engineering of the molecular framework has synthesized two superclusters based on {Sr⊂P 6 M 2 Mo 16 O 73 } motif, which exhibit closely related topological structures: Co12Sr4Mo80P36 and Na4Ni23Sr4Mo88P52.

Язык: Английский

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In Situ Carboxylate-Functionalized {Mo₁₂O₃₈}^4–-Based Three-Dimensional Supramolecular Framework as a Copper-Triggered Heterogeneous Catalyst for Alkene Oxidation

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Май 3, 2025

It is of great research value to develop an efficient and stable catalyst that can achieve the oxidation alkenes obtain epoxides, which serve as a multifunctional intermediate with important commercial value. Based on this, three-dimensional (3D) supramolecular framework H[CuI(H3bdcbpy)2(Mo12O38)(H2O)] (1, H4bdcbpy·2Cl = N,N'-bis(3,5-dicarboxybenzyl-4,4'-bipyridine·dichloride) was obtained from carboxylate-functionalized 1D coordination polymers, were derived unusual in situ [Mo12O38]4- cluster Cu-electron-deficient carboxylate complex units. The catalytic performance 1 epoxidation using TBHP examined, revealing its remarkable efficiency conversion cis-cyclooctene, high rate 99% outstanding selectivity 100%. Complex exhibited higher activity than unmodified H4bdcbpy·2Cl, CuCl2·2H2O, Na2MoO4·2H2O, well most previously reported polyoxometalate (POM)-based metal-organic complexes (POMOCs). Moreover, reaction kinetics mechanism explored free radical trapping experiments control experiments. stability also investigated.

Язык: Английский

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Cocrystallization and Separation of Optically Active Atom-Precise Ag₃₂ and Ag₂₀ Clusters

Crystal Growth & Design, Год журнала: 2025, Номер unknown

Опубликована: Май 20, 2025

Язык: Английский

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Electrochemical Biosensor Based on Dual-Ligand Functionalized Lanthanide-Encapsulated Polyoxometalate Conductive Polymer Film for Detecting Broad-Spectrum Tumor Marker MicroRNA-155

Inorganic Chemistry, Год журнала: 2024, Номер 63(46), С. 22149 - 22161

Опубликована: Ноя. 1, 2024

In this work, a dual-ligand functionalized lanthanide-encapsulated selenotungstate [H2N(CH3)2]16Na2H10[Ho6(H2O)10(HPACA)4W10O28(Ac)2][SeW9O33]6 · 60H2O (1, HPACA = 2-pyrazinecarboxylic acid, HAc acetic acid) was successfully acquired by simultaneously incorporating rigid and flexible Ac– ligands to one reaction system. Interestingly, the polyanion [Ho6(H2O)10(HPACA)4W10O28(Ac)2][SeW9O33]628– of 1 is composed six trivacant Keggin-type [B-α-SeW9O33]8– units interconnected through an organic–inorganic hybrid bimetallic [Ho6(H2O)10(HPACA)4W10O28(Ac)2]20+ cluster. Moreover, 1@PNMPy film (PNMPy poly(N-methylpyrrole)) prepared electrochemical polymerization strategy. The doping significantly narrows bandgap in film, which enables exhibit remarkable conductivity rapid electron transfer capability. Then, film-modified glassy carbon electrode used construct 1@PNMPy-based biosensor (ECBS), achieves sensitive detection (a low limit 0.108 fM wide concentration range 10–8–10–15 M) for broad-spectrum tumor marker microRNA-155. Also, ECBS has good specific recognition performance microRNA-155 variety interfering media. research not only contributes deeper understanding synthetic chemistry multicomponent polyoxometalate (POM)-based materials but also can further expand innovative applications POM-based devices.

Язык: Английский

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Auxiliary ligand-induced assembly of atomically precise silver clusters

Science China Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Сен. 27, 2024

Язык: Английский

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