Synthesis and studies of new photochromic spiropyrans containing a formylcoumarin fragment

A bisspiropyran fluorescent probe for the selective and rapid detection of cyanide anion in liqueurs

“…Due to excellent photoluminescence property, spiropyran and its derivatives have attracted considerable attention recently in the research area of optical probes, 18,19 bioimaging 20 and drug delivery. 21,22 Through modification, the stability, absorption, and fluorescence properties of spiropyrans can be improved.…”