Label-free photoelectrochemical immunosensing platform for detection of carcinoembryonic antigen through photoactive conducting poly(5-formylindole) nanocomposite

Label-free sensitive photoelectrochemical immunosensor for detection of carcinoembryonic antige based on conducting polymer nanocomposite is firstly constructed, which shows wide linear response with low detection limit, good reproducibility and high specificity.404