An anti-poisoning nanosensor for in situ monitoring of intracellular endogenous hydrogen sulfide.

Intracellular H 2 S plays an important regulatory role in cell metabolism. The limited sensing materials and severe sensor passivation hinder its quantification. We functionalized conductive nanowires with MoS 2 and quercetin in a large-scale manner, developed single nanowire sensors with excellent electrocatalytic and anti-poisoning performance, and achieved the accurate quantification of H 2 S within single cells.