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A sensitive and specific electrochemical immunosensor was developed with α‐fetoprotein (AFP) as the model analyte by using gold nanoparticle label for enzymatic catalytic amplification. A self‐assembled monolayer membrane of mercaptopropionic acid (MPA) was firstly formed on the electrode surface through gold‐sulfur interaction. Monoclonal mouse anti‐human AFP was covalently immobilized to serve as...
In this paper, we report a kind of ordered 3D Au nano-prickle clusters by directly electrodeposited on glassy carbon electrode utilizing the spatial obstruction/direction of the polycarbonate membrane. The proposed 3D nanoclusters are applied to fabricate a sandwich-type electrochemical immunosensor with human IgG as a model analyte. The electrodeposited Au nanoclusters build direct electrical contact...
A novel electrochemical immunosensor using functionalized silica nanoparticles (Si NPs) as protein tracer has been developed for the detection of prostate specific antigen (PSA) in human serum. The immunosensor was carried out based on a heterogeneous sandwich procedure. The PSA capture antibody was immobilized on the gold electrode via glutaraldehyde crosslink. After reaction with the antigen in...
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