Electrochemiluminescence immunoassay for the prostate-specific antigen by using a CdS/chitosan/g-C3N4 nanocomposite
作者: Bo HuangXing-Pei LiuJing-Shuai ChenChang-jie MaoHe-Lin NiuBao-Kang Jin
刊名: Microchimica Acta, 2020, Vol.187 (3), pp.155
来源数据库: Springer Nature Journal
DOI: 10.1007/s00604-020-4125-y
关键词: BiosensorQuantum dotsEnergy transferFerroceneQuenchingSerumDNA
原始语种摘要: An electrochemiluminescence (ECL biosensor was fabricated for the evaluation of prostate specific antigen (PSA. The sensor was developed by successively modifying glassy carbon electrode (GCE electrodes with CdS/Chito/g-CN nanocomposites and DNA1 was labeled at the 5′ end with thiol. The aptamer DNA was labeled at the 3′ end with a quencher ferrocene (Fc was ligated to DNA1 by the principle of complementary base pairing. In the absence of PSA, the ECL intensity signal is effectively quenches through the energy transfer and photoexcitation electron transfer between CdS/Chito/g-CN emitter and quencher Fc. After incubation with target PSA, the aptamer DNA interacts with PSA and then moved away from the electrode surface together, which will recover the ECL intensity. Under the optimal...
全文获取路径: Springer Nature  (合作)
影响因子:3.434 (2012)