A series of isopolymolybdate-viologen compounds: structures and photochromic, organic amine sensing, and double anti-counterfeiting properties

Yu, Shuang; Jin, Ying; Tian, Aixiang; Wang, Xiuli

doi:10.1360/ssc-2023-0062

Cited by 3 publications

(4 citation statements)

References 38 publications

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“…The binding energy of N 1s moves from 398.80 eV (before irradiation) to 398.59 eV (after irradiation) (Figure S13c). Based on the above results, the O atoms are as electron donors, while the N atoms are as electron acceptors . So, the process of electron transfer is from O to N. Namely, electrons are transferred from O in POMs to N in organic ligands.…”

Section: Resultsmentioning

confidence: 88%

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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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Section: Resultsmentioning

confidence: 88%

“…Based on the above results, the O atoms are as electron donors, while the N atoms are as electron acceptors. 42 So, the process of electron transfer is from O to N. Namely, electrons are transferred from O in POMs to N in organic ligands.…”

Section: Crystal Structures Of [H(bypy)]•(bypy-2) 1/2 •(Pmo 12 O 40 )...mentioning

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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“…The peaks at 3062−3283, 772−947, and 1420−1650 cm −1 can be attributed to ν(C-H) and ν(C-N) [45]. The characteristic absorption peaks of the naphthalene ring are in the range of 1420−1650 cm −1 [46]. The PXRD pattern of 1 is provided in Fig.…”

Section: Ir and Powder X-ray Diffraction (Pxrd) Of Complexmentioning

confidence: 96%

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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“…In viologen organic ligands, the positively charged quaternary nitrogen facilitates the transfer of electrons through carbon to other atoms, creating a process analogous to redox reactions. 15,16 Simultaneously, the highly electronegative N and O atoms readily form hydrogen bonds, providing effective acceptors for constructing three-dimensional (3D) supramolecular frameworks. However, most viologen ligands are highly soluble in water and other solvents, which greatly hinders their practical application.…”

Section: Introductionmentioning

confidence: 99%

Cu/Ni Keggin-based viologen complexes with water-assisted 1D proton channels for asymmetric supercapacitors

Cui,

Liu,

Yang

et al. 2024

J. Mater. Chem. C

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A series of isopolymolybdate-viologen compounds: structures and photochromic, organic amine sensing, and double anti-counterfeiting properties

Cited by 3 publications

References 38 publications

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

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

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

Cu/Ni Keggin-based viologen complexes with water-assisted 1D proton channels for asymmetric supercapacitors

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