Synthesis, characterization of magnesium-substituted tungstoarsenate, , and its electrochromism

Bi, Lei; Zhou, Wei; Jiang, Junguang; Dong, Shaojun

doi:10.1016/j.jelechem.2008.09.019

Cited by 18 publications

(5 citation statements)

References 46 publications

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“…The UV spectrum of SmPW11 in water is shown in Figure S5 in the Supporting Information, which reveals the feature absorption of Keggin POMs. 5 SmPW11 in its UV spectrum has two absorption bands: the higher-energy one belongs to the charge transfer from terminal oxygen (O d ) to W, and the lower-energy one belongs to the charge transfer from bridged oxygen (O c /O b ) to W. 45 Electrochemical Feature of SmPW11 in Support Electrolyte Solution. The electrochemical feature of SmPW11 in support electrolyte solution was measured and briefly represented here for comparison.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The UV spectrum of SmPW11 in water is shown in Figure S5 in the Supporting Information, which reveals the feature absorption of Keggin POMs . SmPW11 in its UV spectrum has two absorption bands: the higher-energy one belongs to the charge transfer from terminal oxygen (O d ) to W, and the lower-energy one belongs to the charge transfer from bridged oxygen (O c /O b ) to W …”

Section: Resultsmentioning

confidence: 99%

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First Orange Fluorescence Composite Film Based on Sm-Substituted Tungstophosphate and Its Electrofluorochromic Performance

Gao

Tian

et al. 2016

ACS Appl. Mater. Interfaces

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We chose a Sm-containing sandwich-type tungstophosphate K3Cs8[Sm(PW11O39)2]·10H2O (SmPW11) as a molecular dyad, which contains photoluminescence and electrochromism components in a skeletal structure, and investigated its electrofluorochromic performance both in solution and in composite films. First, the electrochemical activity and luminescence property of SmPW11 were studied in different pH solutions to determine the optimal pH solution medium; and then, the electrofluorochromic performance of SmPW11 was investigated under the optimized pH solution medium. Subsequently, the composite films containing SmPW11 were prepared on quartz substrates and conductive ITO substrates through a layer-by-layer (LbL) assembly method, using PDDA and PEI as molecular linkers. Characterization methods of the composite films include UV-vis spectra, fluorescence spectroscopy, cyclic voltammetry (CV), bulk electrolysis with coulometry, chronoamperometry, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). Finally, in situ UV-vis and fluorescence spectroelectrochemical systems were used to research electrofluorochromic properties for the composite films under electrochemical modulation. The results indicate that the composite films display not only orange luminescence emission but also reversible orange luminescence switching behaviors manipulated by the redox process of tungstophosphate species PW11 via the energy transfer between the orange luminescence component Sm and electroreduced species of tungstophosphate PW11.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

First Orange Fluorescence Composite Film Based on Sm-Substituted Tungstophosphate and Its Electrofluorochromic Performance

Gao

Tian

et al. 2016

ACS Appl. Mater. Interfaces

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“…Indium tin oxide (ITO) glass slides were cleaned before use according to the published procedures ( Bi et al, 2008 ). The ITO substrates were cleaned by sonication in a 50% 1M NaOH in ethanol solvent for 5 min.…”

Section: Methodsmentioning

confidence: 99%

Co-assembly of graphene/polyoxometalate films for highly electrocatalytic and sensing hydroperoxide

et al. 2023

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Graphene oxide (GO) films mixed with polyethylenimine (PEI) were prepared by a layer-by-layer assembly (LBL) method, in which the GO component is then converted to reduced GO (rGO) in situ through an electron transfer interaction with a polyoxometalate (POM) that is assembled on the outer surface. With this, devices were manufactured by spreading composite films of (PEI/rGO)n-POM with different numbers of PEI/rGO layers on ITO substrates. Cyclic voltammetry (CV) reveals that the catalytic activity for H2O2 of (PEI/rGO)n-POM films was significantly higher than that of similar films of (PEI/GO)n/PEI/POM manufactured LBL with the same number of layers, although the catalyst POM content of (PEI/rGO)n-POM was only half that of (PEI/GO)n/PEI/POM. The catalytic activity of (PEI/rGO)n-POM films first increases and then decreases as the number of PEI/rGO layers increases. The result shows that (PEI/rGO)3-POM films with three PEI/rGO layers exhibit the highest efficiency. Amperometric measurements of the (PEI/rGO)3-POM films showed improved current response, high sensitivity, wide linear range, low detection limit, and fast response for H2O2 detection. The enhanced catalytic property of (PEI/rGO)n-POM films is attributed to the electron transfer interaction and electrostatic interaction between POM and rGO.

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“…POM-based EC films can effectively control the visible light transmittance; for example, TiO 2 (NP)–Na–P 5 W 30 , 8 P 2 W 18 /WO 3 (P 2 W 18 : P 2 W 18 O 62 6− ), 9 [(PEI/SiMoW) 25 /(g-C 3 N 4 NS/SiMoW) 3 /(PEI/SiMoW) 2 ] (PEI: poly(ethyleneimine), SiMoW: SiMoW 10 O 39 8− ), 10 and [PDDA/As 2 W 15 Mg 3 ] 4 (PDDA: poly(diallyldimethylammonium) chloride, As 2 W 15 Mg 3 : As 2 W 15 Mg 3 O 62 18− ). 11 Furthermore, POMs also exhibit the ability to regulate the Near Infrared (NIR) spectrum, with promising application potential in the energy regulation field, but there are few related reports. 12,13 Therefore, the development of POMs with NIR absorption properties will be of great research significance in the EC field.…”

Section: Introductionmentioning

confidence: 99%

Enhanced dual-band modulation of visible and near-infrared light transmittance in electrochromic composite films based on Preyssler-type polyoxometalates and W₁₈O₄₉

Yang

et al. 2022

New J. Chem.

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Synthesis, characterization of magnesium-substituted tungstoarsenate, , and its electrochromism

Cited by 18 publications

References 46 publications

First Orange Fluorescence Composite Film Based on Sm-Substituted Tungstophosphate and Its Electrofluorochromic Performance

First Orange Fluorescence Composite Film Based on Sm-Substituted Tungstophosphate and Its Electrofluorochromic Performance

Co-assembly of graphene/polyoxometalate films for highly electrocatalytic and sensing hydroperoxide

Enhanced dual-band modulation of visible and near-infrared light transmittance in electrochromic composite films based on Preyssler-type polyoxometalates and W₁₈O₄₉

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Synthesis, characterization of magnesium-substituted tungstoarsenate, , and its electrochromism

Cited by 18 publications

References 46 publications

First Orange Fluorescence Composite Film Based on Sm-Substituted Tungstophosphate and Its Electrofluorochromic Performance

First Orange Fluorescence Composite Film Based on Sm-Substituted Tungstophosphate and Its Electrofluorochromic Performance

Co-assembly of graphene/polyoxometalate films for highly electrocatalytic and sensing hydroperoxide

Enhanced dual-band modulation of visible and near-infrared light transmittance in electrochromic composite films based on Preyssler-type polyoxometalates and W18O49

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Product

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Enhanced dual-band modulation of visible and near-infrared light transmittance in electrochromic composite films based on Preyssler-type polyoxometalates and W₁₈O₄₉