A novel “signal on” photoelectrochemical strategy based on dual functional hemin for microRNA assay†
Abstract
In this work, a novel “signal on” photoelectrochemistry (PEC) biosensor was constructed with dual-functional hemin as a signal quencher and electronic mediator for ultrasensitive target microRNA-141 assay with the assistance of T7 exonuclease (Exo)-initiated target amplification technology.