Abstract
Novel fluorescent probes for Hg2+ are developing rapidly because Hg2+ has serious harm to the human health and natural environment. The deprotection reaction of thioacetal or thioketal based on sulfhydryl group is selective but slow. How to improve the reaction speed of deprotection methods on the premise of ensuring selectivity becomes a key problem. Herein, we designed and synthesized two coumarin ketal probes with similar structures: DTK and MTK. Both probes with highly similar structures could sense Hg2+, but sensing performance was special different. MTK replaced S with O in DTK, resulting in a sharp reduction in detection time (DTK took 18 min, while MTK achieved instantaneous detection of Hg2+), and has excellent sensitivity and selectivity. Moreover, a paper-based sensor was also designed as a convenient real-time device to detect Hg2+.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call