A “turn-on” electrochemiluminescent biosensor for detecting Hg2+ at femtomole level based on the intercalation of Ru(phen)32+ into ds-DNA

Abstract

A well-designed oligonucleotide functionalized for Hg(2+) identification and Ru(phen)(3)(2+) intercalation is used to develop a "turn-on" electrochemiluminescent (ECL) biosensor for the determination of Hg(2+) in a drop (10 μL) of sample.