An efficient target–intermediate recycling amplification strategy for ultrasensitive fluorescence assay of intracellular lead ions

An ultrasensitive fluorescence assay for intracellular Pb2+ determination was proposed through target–intermediate recycling amplification based on metal-assisted DNAzyme catalysis and strand displacement reactions.

In situ electro-polymerization of nitrogen doped carbon dots and their application in an electrochemiluminescence biosensor for the detection of intracellular lead ions

Here, a sensitive electrochemiluminescence (ECL) biosensor using N doped carbon dots (N-CDs) as luminophores, and Pd–Au hexoctahedrons (Pd@Au HOHs) as enhancers, was developed for the detection of intracellular Pb2+.