The assembly of [Mo2O2S2]2+ based on polydentate phosphonate templates and their proton conductivity

Li, Bo; Meng, Yu-Xi; Liu, Qian-Qian; Chen, Xin-Yu; Liu, Xin; Zang, Hong-Ying

doi:10.1039/d3cc04114j

Cited by 6 publications

(2 citation statements)

References 37 publications

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“…Polyoxometalates (POMs), a type of inorganic metal oxide cluster with tremendous architectural diversity, exhibit attractive properties [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. As an important branch of the POM family, polyoxovanadates (POVs) have attracted increasing attention because of their diverse structures and remarkable properties.…”

Section: Introductionmentioning

confidence: 99%

New two fold interpenetrating 3D polyoxovanadate-based metal–organic framework as bifunctional catalyst for the removal of 2-chloroethyl ethyl sulfide and phenolic compounds

Li,

Zheng,

Liu

et al. 2024

Polyoxometalates

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The design and synthesis of a bifunctional catalyst to tackle environmental pollution caused by 2-chloroethyl ethyl sulfide (CEES) and phenolic compounds is meaningful. In this study, a new three-dimensional (3D) polyoxovanadate (POV)-based metal-organic framework, [Co(L)(V 4 O 12 ) 0.5 (H 2 O)]•2H 2 O (1; L = N,N'-bis(3methylpyridin-3-yl)-2,6-naphthalenediamide), was synthesized under hydrothermal conditions. 1 was characterized using single-crystal Xray diffraction analysis, infrared spectroscopy, and powder X-ray diffraction. Structural analysis shows that the [V 4 O 12 ] 4-clusters and pairs of Co 2+ cations are alternately connected to form a onedimensional inorganic chain, eventually generating a 3D (4,4)connected framework through the expansion of L, which exhibits a two fold interpenetration array. As a bifunctional catalyst, 1 exhibits satisfactory catalytic properties for the selective oxidation of 2-chloroethyl ethyl sulfide to the corresponding sulfoxide, with an effective conversion of > 99% and selectivity of 97%. Furthermore, 1 exhibits excellent photocatalytic degradation activity toward phenol, 2-chlorophenol, and m-cresol under visible light. The degradation efficiencies were above 92.6% for 140 min. The photocatalytic reaction kinetics, mechanisms of photodegradation, and recycling capability of phenol were also investigated in detail.

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Section: Introductionmentioning

confidence: 99%

New two fold interpenetrating 3D polyoxovanadate-based metal–organic framework as bifunctional catalyst for the removal of 2-chloroethyl ethyl sulfide and phenolic compounds

Li,

Zheng,

Liu

et al. 2024

Polyoxometalates

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“…Polyoxometalate (POM) is an important branch of the inorganic field, which is a kind of metal oxygen clusters formed by oxygen connection of pretransition metal ions. − Until now, POM has been widely studied as a functional component and applied in many fields such as light, electricity, and magnetism. − Moreover, the surface of POMs is rich in electrons, which can provide electrons easily. Thus, POMs own excellent redox properties, inducing the applications in electrochemistry and catalysis. − Furthermore, the characteristics of rich electrons of POMs can conduce electron transition, which makes POMs act as precursors of chromic materials .…”

Section: Introductionmentioning

confidence: 99%

Four Chromic Compounds Constructed from Keggin Polyoxometalates and Viologens with Applications in Ultraviolet, Metal Ion Detection, and Ink-Free Printing

Gao,

Liu,

Ying

et al. 2024

Crystal Growth & Design

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A combination of polyoxometalates and viologens to construct discoloration materials with charge transfer has become attractive presently. In this work, four kinds of POM–viologen color-changing materials were successfully synthesized, namely, [Cu(1,4-Mbby)2(HPMoVI 10MoV 2O40)] (1), [H2(1,4-Mbby)2]·(SiMo12O40) (2, 1,4-Mbby·Cl = (1-(4-methyl-benzyl)-[4,4’]bipyridinyl-1-ium)chloridate), [H2(Bypy)2]·(SiMo12O40) (3), and [H(Bypy)]·(Bypy-2)1/2·(PMo12O40) (4, Bypy = 1-benzyl-4,4′-bipyridyinium chloride, Bypy-2 = 1,1′-dibenzyl-4,4′-bipyridine chloride). In compound 1, a [Cu(1,4-Mbby)2]4+ subunit caps on the Keggin anion to build a monosupporting cluster. Compounds 2–4 are discrete structures with dissociative POMs and viologens. All compounds 1–4 show good reversible photochromic properties under xenon lamp (300–400 nm) irradiation. Under the stimulation of current, compounds 1–4 also show reversible electrochromic properties within a certain range of applied voltage. The good color-changing properties of these compounds are due to the generation of free viologen radicals and charge transfer. Based on their color-changing properties, they can be applied to many fields, such as ultraviolet detectors, inkless printing, and visual detection of heavy metal ions. These practical applications are of positive significance for life and production.

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Multi‐Template‐Guided Synthesis of High‐Dimensional Molecular Assemblies for Humidity Gradient‐Based Power Generators

Li,

Duan,

Cui

et al. 2024

Angewandte Chemie

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Systematically orchestrating fundamental building blocks into intricate high‐dimensional molecular assemblies at molecular level is imperative for multifunctionality integration. However, this remains a formidable task in crystal engineering due to the dynamic nature of inorganic building blocks. Herein, we develop a multi‐template‐guided strategy to control building blocks. The coordination modes of ligands and the spatial hindrance of anionic templates are pivotal in dictating the overall structures. Flexible multi‐dentate linkers selectively promote the formation of oligomeric assembly ([TeO3(Mo2O2S2)3O2(OH)(C5O2H7)3]4‐ {TeMo6}) into tetrahedral cages ([(TeO3)4(Mo2O2S2)12(OH)12(C9H9O4P)6]8‐ {Te4Mo24} and [(AsO4)4(Mo2O2S2)12(OH)12(C9H9O6)4]12‐ {As4Mo24}), while steric hindrance from anionic templates further assists in assembling cages into an open quadruply twisted Möbius nanobelt ([(C6H5O3P)8(Mo2O2S2)24(OH)24(C8H10O4)12]16‐ {P8Mo48}). Among these structures, the hydrophilic‐hydrophobic hybrid cage {Te4Mo24} emerges as an exemplary molecular model for proton conduction and serves as a prototype for humidity gradient‐based power generators (HGPGs). The Te4Mo24‐PVDF‐based HGPG (PVDF = Poly(vinylidene fluoride)) exhibits notable stability and power generation, yielding an open‐circuit voltage of 0.51 V and a current density of 77.8 nA cm‐2 at room temperature and 90% relative humidity (RH). Further insights into the interactions between water molecules and microscale molecules within the generator are achieved through molecular dynamics simulations. This endeavor unveils a universal strategy for synthesizing multifunctional integration molecules.

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The assembly of [Mo₂O₂S₂]²⁺ based on polydentate phosphonate templates and their proton conductivity

Abstract: The assembly of [Mo2O2S2]2+ unit depends on the configuration of polydentate phosphonic acid templates, leading to novel topologies with enhanced nuclearity and complexity. The variation of the assembled structures also...

Cited by 6 publications

References 37 publications

New two fold interpenetrating 3D polyoxovanadate-based metal–organic framework as bifunctional catalyst for the removal of 2-chloroethyl ethyl sulfide and phenolic compounds

New two fold interpenetrating 3D polyoxovanadate-based metal–organic framework as bifunctional catalyst for the removal of 2-chloroethyl ethyl sulfide and phenolic compounds

Four Chromic Compounds Constructed from Keggin Polyoxometalates and Viologens with Applications in Ultraviolet, Metal Ion Detection, and Ink-Free Printing

Multi‐Template‐Guided Synthesis of High‐Dimensional Molecular Assemblies for Humidity Gradient‐Based Power Generators

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