Synergistic effect of sandwich polyoxometalates and copper–imidazole complexes for enhancing the peroxidase-like activity

Chai, Dong-Feng; Ma, Zhuangzhuang; Yan, Hong; Qiu, Yunfeng; Liu, Hong; Guo, Huadong; Gao, Guanggang

doi:10.1039/c5ra13265g

Cited by 51 publications

(17 citation statements)

References 60 publications

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“…Gao et al . synthesized and structurally characterized two new hybrids based on copper(II)-imidazole complex modified sandwich-type tungstobismuthate or tungstoantimonite, Na 4 H 2 [Cu 4 (H 4 im) 12 (H 3 im) 2 ][Cu 3 (H 2 O) 3 (XW 9 O 33 ) 2 ] · nH 2 O (H 4 im = imidazole, H 3 im = deprotonated imidazole, X = Bi, Sb), which demonstrate higher peroxidase-like activity than Keggin-type POMs around physiological pH values in a heterogeneous phase 28 . Sha et al .…”

Section: Introductionmentioning

confidence: 99%

The Intrinsic Enzyme Activities of the Classic Polyoxometalates

Zhang

Zhao

Tian

et al. 2019

Sci Rep

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The mimicking enzyme activities of eighteen classic POMs with different structures, Keggin (H3PW12O40, H4SiW12O40, H4GeW12O40, K4GeW12O40, H3PMo12O40, H4SiMo12O40 and Eu3PMo12O40), Wells-Dawson (H6P2Mo18O62, α-(NH4)6P2W18O62 and α-K6P2W18O62·14H2O), lacunary-Keggin (Na8H[α-PW9O34], Na10[α-SiW9O34], Na10[α-GeW9O34] and K8[γ-SiW10O36]), the transition-metal substituted-type (α-1,2,3-K6H[SiW9V3O34] and H5PMo10V2O40), sandwich-type (K10P2W18Fe4(H2O)2O68) and an isopolyoxotungstate (Na10H2W12O42) were screened and compared. The mechanisms and reaction conditions of POMs with mimicking enzyme-like activities were also analyzed. The results shown that the structures, the hybrid atoms, the coordination atoms, the substituted metal atoms, pH and substrate are the effect factors for the enzyme mimic activities of POM. Among the eighteen POMs, H3PW12O40, H4SiW12O40, H4GeW12O40, α-(NH4)6P2W18O62, α-K6P2W18O62·14H2O, Na8H[α-PW9O34], Na10[α-SiW9O34], Na10[α-GeW9O34], K8[γ-SiW10O36], K10P2W18Fe4(H2O)2O68 and Na10H2W12O42 had the peroxidase activities. Eu3PMo12O40, H3PMo12O40, H4SiMo12O40, α-1,2,3-K6H [SiW9V3O34], H6P2Mo18O62 and H5PMo10V2O40 showed the oxidase-like activities. K4GeW12O40 did not show the peroxidase and oxidase activities. The Na8H[α-PW9O34], Na10[α-SiW9O34] and Na10[α-GeW9O34] showed intrinsic enzyme activities at alkaline conditions, which were different from other type of POMs. The sandwich-type K10P2W18Fe4(H2O)2O68 displayed the strongest peroxidase activity, which is similar to natural horseradish peroxidase.

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Section: Introductionmentioning

confidence: 99%

The Intrinsic Enzyme Activities of the Classic Polyoxometalates

Zhang

Zhao

Tian

et al. 2019

Sci Rep

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“…It has been reported that the mechanism of catalytic oxidation of TMB may be attributed to hydroxyl radical (•OH) generated from the decomposition of H 2 O 2 [45]. In order to shed light on the catalytic mechanism of the peroxidase-like activity of the NiS/MMT/GO nanocomposites, fluorescent probe as well as ESR technique were used to verify whether •OH generated in the catalytic process.…”

Section: Reaction Mechanism Of Nis/mmt/go Nanocomposites As Peroxidasementioning

confidence: 99%

Novel synthesis of NiS/MMT/GO nanocomposites with enhanced peroxidase-like activity for sensitive colorimetric detection of glutathione in solution

Chen

Zhu

Yang

et al. 2018

Adv Compos Hybrid Mater

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In the present study, a facile method was proposed to prepare nickel sulfide (NiS) nanoparticles well-dispersed on the surface of montmorillonite/graphene oxide (MMT/GO). The NiS/MMT/GO nanocomposites were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), fluorescence spectrophotometry, etc. Significantly, the novel NiS/MMT/GO nanocomposites exhibited high peroxidase-like activity toward the typical chromogenic substrate, 3,3′,5,5′-tetramethylbenzidine (TMB). However, glutathione (GSH) could inhibit the peroxidase-like activity of NiS/ MMT/GO along with a visible color variation. Based on the color change of the system of nanocomposites-H 2 O 2 -TMB, a novel colorimetric sensor was designed and conveniently used to quantitatively detect H 2 O 2 as well as GSH. The limit of detection (LOD) of H 2 O 2 and GSH is 9.73 and 0.5043 μM, respectively. The proposed H 2 O 2 sensor has potential application in the field of biosensing, food, and environment.

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“…14 They can be applied as both reducing and stabilizing agents in aqueous solutions at room temperature. 15 Furthermore, the ability of the multi-electron redox reaction of POMs make them particularly useful for the synthesis of noble metal nanoparticles. [16][17][18] In recent years, it has become increasingly clear that there is a critical need for green-chemistry-type synthetic routes to new materials.…”

Section: Introductionmentioning

confidence: 99%

Sonochemical synthesis of polyoxometalate-stabilized gold nanoparticles for point-of-care determination of acetaminophen levels: preclinical study in an animal model

et al. 2020

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Synergistic effect of sandwich polyoxometalates and copper–imidazole complexes for enhancing the peroxidase-like activity

Abstract: Two inorganic–organic hybrids based on copper(ii)–imidazole complex modified sandwich-type tungstobismuthate or tungstoantimonite, have been synthesized, demonstrating higher peroxidase-like activity using TMB as a peroxidase substrate.

Cited by 51 publications

References 60 publications

The Intrinsic Enzyme Activities of the Classic Polyoxometalates

The Intrinsic Enzyme Activities of the Classic Polyoxometalates

Novel synthesis of NiS/MMT/GO nanocomposites with enhanced peroxidase-like activity for sensitive colorimetric detection of glutathione in solution

Sonochemical synthesis of polyoxometalate-stabilized gold nanoparticles for point-of-care determination of acetaminophen levels: preclinical study in an animal model

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