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摘要：In this work, a photoelectrochemical (PEC) sensor for ovarian cancer detection was constructed based on TiO2/poly(5-formylindole) (P5FIn)heterojunction using cascade amplification. The combined detection of multiple markers instead of a single detection mode can improve diagnostic accuracy. The photoelectron conversion efficiency and photocurrent response were significantly improved by the reaction of the detector glutathione (GSH) with cystine. 17 beta-Estradiol (E2) had a negative effect on the PEC response, reducing the photocurrent signal, and ultimately realizing the sensitive detection of GSH and E2. The PEC sensor had good detection performance for GSH and E2, with a linear detection range (LDR) of 0.5-1000 mu M, and the limits of detection (LOD) were 0.167 mu M and 0.1224 pM, respectively, with a detection range of 0.0003671-36.71 nM. Meanwhile, the PEC sensor also has good analytical capability, and this cascade signal amplification strategy has a potential development prospect in disease detection.

卷号：97

期号：12

是否译文：否