Ultra-fast and visual detection of hydrazine hydrate based on a simple coumarin derivative

A cleverish fluorescence probe based on coumarin was developed, exhibiting remarkable color change, strong fluorescence enhancement and fast response when it interacts with hydrazine in water solution. The limit of detection (LOD) is 5.59 × 10-6 M for ultraviolet analysis and 8.18 × 10-8 M for fluorescence analysis, respectively. Taking advantage of good sensitivity and short response time, the probe was applied to test hydrazine in water and to observe hydrazine in living cells.