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A novel amperometric enzyme immunosensor with amplified sensitivity for the determination of alpha-fetoprotein (AFP) was constructed with layer-by-layer assembly of ZnSe quantum dots (ZnSe QDs)/Azure I/gold nanoparticles (nanoAu)/poly (3,4-ethylenedioxythiophene) (PEDOT) on Pt electrode. Firstly, citrate coated nanoAu was immobilized on the PEDOT polymer film, which was electrochemically synthesized...
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