A novel, highly sensitive and fast responsive turn-on fluorescence probe ADMPA for Cd2+ was successfully developed based on 2,9-dimethyl-1,10-phenanthroline and o-aminophenol.
A new fluorescent sensor 5 having fused imidazopyridine scaffold has been synthesized via cascade cyclization. It exhibits highly sensitive and selective detection of Fe3+ (‘turn-on’) and Hg2+ (‘turn-off’) in vitro and in HeLa cells.