G-quadruplex-based DNAzyme for sensitive mercury detection with the naked eye†
Abstract
Hg2+ is able to inhibit the peroxidase-like DNAzyme function of a T-containing G-quadruplex DNAviaHg2+-mediated T–T base pairs, which enables the visual detection of Hg2+ in the TMB–H2O2 reaction system with high selectivity and sensitivity.