A novel photoelectrochemical sensor based on photocathode of PbS quantum dots utilizing catalase mimetics of bio-bar-coded platinum nanoparticles/G-quadruplex/hemin for signal amplification.

本文报道了一种基于p型硫化铅（PbS）量子点光电阴极的新型光电化学生物传感器，用于DNA的高灵敏检测。该传感器以ITO玻璃为基底，TGA封端PbS量子点作为光活性光电阴极，氨基捕获探针通过EDC/NHS共价固定于量子点表面。目标DNA与捕获探针杂交后，再与生物条形码铂纳米颗粒/G-四链体/hemin（Pt NPs/G-quadrup...