B, N co-doped graphene synergistic catalyzed ZnO quantum dots with amplified cathodic electrochemiluminescence for fabricating microcystin-LR aptasensor

Yuan, Ruishuang; Ding, Lei; You, Fuheng; Wen, Zuorui; Liu, Qian; Wang, Kun

doi:10.1016/j.snb.2021.130795

Cited by 21 publications

(7 citation statements)

References 40 publications

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“…S5A),† and a pair of redox peaks (at −0.98 V and −1.2 V) were found to be completely consistent with the results obtained in K 2 S 2 O 8 solution, which is also close to the potential of Zn( ii ) redox peaks on a ZnO nanomaterial modified electrode. 37 The redox peak current increased linearly with the CV scan rate ( ν ) from 10 to 200 mV (Fig. S5B) †.…”

Section: Resultsmentioning

confidence: 97%

Enhancing K₂S₂O₈ electrochemiluminescence based on silver nanoparticles and zinc metal–organic framework composite (AgNPs@ZnMOF) for the determination of l-cysteine

Wang

et al. 2022

RSC Adv.

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Section: Resultsmentioning

confidence: 97%

Enhancing K₂S₂O₈ electrochemiluminescence based on silver nanoparticles and zinc metal–organic framework composite (AgNPs@ZnMOF) for the determination of l-cysteine

Wang

et al. 2022

RSC Adv.

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“…Electrochemical impedance spectroscopy (EIS) is a widely used characterization of electrode surface characteristics . From Figure B, it can be observed that the impedance value of the GCE was very small (curve a), about 73.57 Ω, indicating that the GCE had excellent electrical conductivity.…”

Section: Resultsmentioning

confidence: 99%

“…Electrochemical impedance spectroscopy (EIS) is a widely used characterization of electrode surface characteristics. 37 From Figure 2B, it can be observed that the impedance value of the GCE was very small (curve a), about 73.57 Ω, indicating that the GCE had excellent electrical conductivity. After modification of the PTCA-COF (curve b) on the surface of the GCE, the resistance value increased to about 889.5 Ω, because the poor conductivity of the PTCA-COF prevented the free transfer of electrons.…”

Section: Ecl Behavior and Electrochemical Characterization Of The Mod...mentioning

confidence: 96%

Highly Efficient Dual-Color Luminophores for Sensitive and Selective Detection of Diclazepam Based on MOF/COF Bi-Mesoporous Composites

Jiang

Cao

et al. 2023

ACS Sens.

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Currently, studies on electrochemiluminescence (ECL) mainly focused on the single emission of luminophores while those on multi-color ECL were rarely reported. Here, a bimesoporous composite of the metal−organic framework (MOF)/ covalent-organic framework (COF) with strong and stable dual-color ECL was prepared to construct a novel ECL sensor for sensitive detecting targets. A PTCA-COF with excellent ECL performance was loaded with a great amount of another ECL emitter Cu 3 (HHTP) 2 . Remarkably, the integrated composite had both ECL properties of PTCA-COF at 520 nm and Cu 3 (HHTP) 2 at 600 nm wavelengths. Furthermore, Cu 3 (HHTP) 2 with good electron transfer ability can greatly enhance the electrical conductivity and promote electrochemical activation. Thus, the simultaneous enhanced two-color ECL intensity and the catalytic properties of the conductive MOF exerted a dual enhancement effect on the ECL signal of the composite. Significantly, diclazepam can not only be adsorbed well on the multistage porous structure MOF/COF composite by π−π interactions but also selectively quench the ECL signal of the PTCA-COF, realizing the sensitive detection. The ECL sensor showed a wide detection range from 1.0 × 10 −13 to 1.0 × 10 −8 g/L, and the limit of detection (LOD) was as low as 2.6 × 10 −14 g/L (S/N = 3). The proposed ECL sensor preparation method was simple and sensitive, providing a new perspective for the potential application of multi-color ECL in the sensing field.

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“…With the deepening of research, it has been found that the metal oxide nanomaterials such as TiO 2 , SnO 2 , and ZnO have ECL properties. − The new type of ECL reagent confirms the superiorities of low cost, nontoxicity, high chemical stability, and commendable biocompatibility, which endows the metal oxide nanomaterials with broad application prospects. However, there are few studies and reports on the ECL properties of metal oxide nanomaterials.…”

Section: Introductionmentioning

confidence: 92%

Dual-Mechanism Quenching of Electrochemiluminescence Immunosensor Based on a Novel ECL Emitter Polyoxomolybdate-Zirconia for 17β-Estradiol Detection

Duan

Zhao

et al. 2022

Anal. Chem.

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The exploration of novel electrochemiluminescence (ECL) reagents has been a breakthrough work in ECL immunoassay. In this work, the ECL properties of polyoxomolybdate-zirconia (POM-ZrO2) were discovered for the first time and their luminescence mechanism was initially explored. Virgulate POM-ZrO2 was synthesized from phosphomolybdic acid hydrate and zirconium oxychloride by solvothermal method, which achieved intense and stabilized cathode ECL emission at a negative potential. Polyaniline@Au nanocrystals (PANI@AuNPs) as the executor of the dual-mechanism quenching strategy were used to reduce the output signal. The quenching efficiency was significantly enhanced by the dual mechanisms of ECL energy transfer and electron transfer. Specifically, PANI@AuNPs can serve as an energy receptor to absorb the energy emitted by POM-ZrO2 (energy donor), while the appropriate energy level can be regarded as the condition for electron transfer to quench the ECL intensity of POM-ZrO2. Herein, the proposed dual-mechanism quenching strategy was applied to the immunoassay of 17β-estradiol by constructing a competitive immunosensor. As expected, the immunosensor demonstrated favorable analytical performance and a wide sensing range from 0.01 pg/mL to 200 ng/mL. Hence, it provides a novel method for the sensitive analysis of other biomolecules, such as disease markers and environmental estrogens.

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B, N co-doped graphene synergistic catalyzed ZnO quantum dots with amplified cathodic electrochemiluminescence for fabricating microcystin-LR aptasensor

Cited by 21 publications

References 40 publications

Enhancing K₂S₂O₈ electrochemiluminescence based on silver nanoparticles and zinc metal–organic framework composite (AgNPs@ZnMOF) for the determination of l-cysteine

Enhancing K₂S₂O₈ electrochemiluminescence based on silver nanoparticles and zinc metal–organic framework composite (AgNPs@ZnMOF) for the determination of l-cysteine

Highly Efficient Dual-Color Luminophores for Sensitive and Selective Detection of Diclazepam Based on MOF/COF Bi-Mesoporous Composites

Dual-Mechanism Quenching of Electrochemiluminescence Immunosensor Based on a Novel ECL Emitter Polyoxomolybdate-Zirconia for 17β-Estradiol Detection

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B, N co-doped graphene synergistic catalyzed ZnO quantum dots with amplified cathodic electrochemiluminescence for fabricating microcystin-LR aptasensor

Cited by 21 publications

References 40 publications

Enhancing K2S2O8 electrochemiluminescence based on silver nanoparticles and zinc metal–organic framework composite (AgNPs@ZnMOF) for the determination of l-cysteine

Enhancing K2S2O8 electrochemiluminescence based on silver nanoparticles and zinc metal–organic framework composite (AgNPs@ZnMOF) for the determination of l-cysteine

Highly Efficient Dual-Color Luminophores for Sensitive and Selective Detection of Diclazepam Based on MOF/COF Bi-Mesoporous Composites

Dual-Mechanism Quenching of Electrochemiluminescence Immunosensor Based on a Novel ECL Emitter Polyoxomolybdate-Zirconia for 17β-Estradiol Detection

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Enhancing K₂S₂O₈ electrochemiluminescence based on silver nanoparticles and zinc metal–organic framework composite (AgNPs@ZnMOF) for the determination of l-cysteine

Enhancing K₂S₂O₈ electrochemiluminescence based on silver nanoparticles and zinc metal–organic framework composite (AgNPs@ZnMOF) for the determination of l-cysteine