Abstract

A new fluorescence probe was developed for HClO detection under physiological conditions, which displayed fast response (t1/2 < 30 s) and large off-on fluorescence increase (>1000-fold) toward HClO with high sensitivity and selectivity. The probe was successfully applied for the detection of both exogenous and endogenous HClO in living cells. Using the probe-based tool, we could observe the H2S-induced HClO biogenesis in living cells for the first time.

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