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• W2938609960 abstract "• A ternary ECL immunoassay based on ABEI is designed for amyloid-β protein detection. • Flower-like Co-MOFs with peroxidase-like activity is used as coreaction accelerator. • Co-MOFs not only act as nanocarriers of ABEI, but also catalyze H 2 O 2 decomposition. • The synergistic catalysis of Co-MOFs and Au NPs realize the ECL signal amplification. In this work, a “luminophore/coreactant/co-reaction accelerator” ternary electrochemiluminescence (ECL) system is proposed by using N -(aminobutyl)- N -(ethylisoluminol) (ABEI) functionalized cobalt-based MOFs (Co-MOFs/ABEI) with superior peroxidase-like activities as the luminophore. ABEI, the derivative of luminol, is used as the reductant and organic ligand to synthesize flower-like Co-MOFs/ABEI. The as-synthesized Co-MOFs/ABEI not only function as desirable nano-carriers for the enrichment of ABEI, but also act as co-reaction accelerators for the catalysis of H 2 O 2 decomposition. Furthermore, Au nanoparticles are decorated on Co-MOFs/ABEI via electrostatics attraction, endowing it with favorable biocompatibility and electrocatalytic property to bond with detection antibodies and generate more excited state ABEI*. Besides, with the advantages of large specific surface area and easy preparation, Au nanoparticles functionalized Fe 3 O 4 @polypyrrole is utilized to anchor the capture antibodies for immunoaction with target analyte. Amyloid-β protein (Aβ 42 ), a principal hallmark of Alzheimer’s disease, is chosen as the target analyte. The proposed Aβ 42 immunosensor performs with a broad linear range from 10 fg mL −1 to 100 ng mL −1 and a detection limit down to 3 fg mL −1 , opens up new prospects for clinical analysis of Aβ 42 and provides promising approaches to synthesize luminophore-functionalized MOFs with high luminous efficiency for ECL bioanalysis." @default.
• W2938609960 created "2019-04-25" @default.
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• W2938609960 date "2019-07-01" @default.
• W2938609960 modified "2023-10-17" @default.
• W2938609960 title "Cobalt-based metal-organic frameworks as co-reaction accelerator for enhancing electrochemiluminescence behavior of N-(aminobutyl)-N-(ethylisoluminol) and ultrasensitive immunosensing of amyloid-β protein" @default.
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• W2938609960 doi "https://doi.org/10.1016/j.snb.2019.04.097" @default.
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